20102212211021 has 16 divisors (see below), whose sum is σ = 20394891893376. Its totient is φ = 19809800640000.

The previous prime is 20102212211009. The next prime is 20102212211027. The reversal of 20102212211021 is 12011221220102.

It is a cyclic number.

It is not a de Polignac number, because 20102212211021 - 2²² = 20102208016717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102212211027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2211216686 + ... + 2211225776.

It is an arithmetic number, because the mean of its divisors is an integer number (1274680743336).

Almost surely, 2^{20102212211021} is an apocalyptic number.

It is an amenable number.

20102212211021 is a deficient number, since it is larger than the sum of its proper divisors (292679682355).

20102212211021 is an equidigital number, since it uses as much as digits as its factorization.

20102212211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20324.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20102212211021 its reverse (12011221220102), we get a palindrome (32113433431123).

The spelling of 20102212211021 in words is "twenty trillion, one hundred two billion, two hundred twelve million, two hundred eleven thousand, twenty-one".