1121010101 has 4 divisors (see below), whose sum is σ = 1121330400. Its totient is φ = 1120689804.

The previous prime is 1121010083. The next prime is 1121010103. The reversal of 1121010101 is 1010101211.

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 1121010101 - 2¹⁰ = 1121009077 is a prime.

It is a Duffinian number.

1121010101 is a modest number, since divided by 10101 gives 1121 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121010103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154841 + ... + 161918.

It is an arithmetic number, because the mean of its divisors is an integer number (280332600).

Almost surely, 2^1121010101 is an apocalyptic number.

It is an amenable number.

1121010101 is a deficient number, since it is larger than the sum of its proper divisors (320299).

1121010101 is an equidigital number, since it uses as much as digits as its factorization.

1121010101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320298.

The product of its (nonzero) digits is 2, while the sum is 8.

The square root of 1121010101 is about 33481.4889304523. The cubic root of 1121010101 is about 1038.8109255792.

Adding to 1121010101 its reverse (1010101211), we get a palindrome (2131111312).

The spelling of 1121010101 in words is "one billion, one hundred twenty-one million, ten thousand, one hundred one".