21002022111022 has 16 divisors (see below), whose sum is σ = 32055196377600. Its totient is φ = 10317159024120.

The previous prime is 21002022111011. The next prime is 21002022111043. The reversal of 21002022111022 is 22011122020012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21002022110987 and 21002022111005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50384604 + ... + 50799727.

It is an arithmetic number, because the mean of its divisors is an integer number (2003449773600).

Almost surely, 2^{21002022111022} is an apocalyptic number.

21002022111022 is a deficient number, since it is larger than the sum of its proper divisors (11053174266578).

21002022111022 is a wasteful number, since it uses less digits than its factorization.

21002022111022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101186151.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21002022111022 its reverse (22011122020012), we get a palindrome (43013144131034).

The spelling of 21002022111022 in words is "twenty-one trillion, two billion, twenty-two million, one hundred eleven thousand, twenty-two".