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11020000001 = 31355483871
BaseRepresentation
bin10100100001101011…
…11101101100000001
31001110000002000002012
422100311331230001
5140032110000001
65021300502305
7540041311613
oct122065755401
931400060065
1011020000001
11474555911a
1221766aa995
13106810aa7a
147677d8db3
154476e02bb
hex290d7db01

11020000001 has 4 divisors (see below), whose sum is σ = 11375483904. Its totient is φ = 10664516100.

The previous prime is 11019999997. The next prime is 11020000027. The reversal of 11020000001 is 10000002011.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11020000001 - 22 = 11019999997 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11020000001.

It is not an unprimeable number, because it can be changed into a prime (11020000091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177741905 + ... + 177741966.

It is an arithmetic number, because the mean of its divisors is an integer number (2843870976).

Almost surely, 211020000001 is an apocalyptic number.

It is an amenable number.

11020000001 is a deficient number, since it is larger than the sum of its proper divisors (355483903).

11020000001 is an equidigital number, since it uses as much as digits as its factorization.

11020000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355483902.

The product of its (nonzero) digits is 2, while the sum is 5.

Adding to 11020000001 its reverse (10000002011), we get a palindrome (21020002012).

The spelling of 11020000001 in words is "eleven billion, twenty million, one", and thus it is an aban number and an uban number.

Divisors: 1 31 355483871 11020000001