1021020201211 has 4 divisors (see below), whose sum is σ = 1021548408112. Its totient is φ = 1020491994312.

The previous prime is 1021020201169. The next prime is 1021020201241. The reversal of 1021020201211 is 1121020201201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1021020201211 - 2²⁷ = 1020885983483 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021020201191 and 1021020201200.

It is not an unprimeable number, because it can be changed into a prime (1021020201241) 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, 264100551 + ... + 264104416.

It is an arithmetic number, because the mean of its divisors is an integer number (255387102028).

Almost surely, 2^{1021020201211} is an apocalyptic number.

1021020201211 is a deficient number, since it is larger than the sum of its proper divisors (528206901).

1021020201211 is an equidigital number, since it uses as much as digits as its factorization.

1021020201211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528206900.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1021020201211 its reverse (1121020201201), we get a palindrome (2142040402412).

The spelling of 1021020201211 in words is "one trillion, twenty-one billion, twenty million, two hundred one thousand, two hundred eleven".