21002022011022 has 32 divisors (see below), whose sum is σ = 45377821937952. Its totient is φ = 6441775246464.

The previous prime is 21002022011011. The next prime is 21002022011023. The reversal of 21002022011022 is 22011022020012.

It is a junction number, because it is equal to n+sod(n) for n = 21002022010992 and 21002022011010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21002022011023) 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, 424670373 + ... + 424719824.

It is an arithmetic number, because the mean of its divisors is an integer number (1418056935561).

Almost surely, 2^{21002022011022} is an apocalyptic number.

21002022011022 is an abundant number, since it is smaller than the sum of its proper divisors (24375799926930).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21002022011022 is a wasteful number, since it uses less digits than its factorization.

21002022011022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849390532.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 21002022011022 its reverse (22011022020012), we get a palindrome (43013044031034).

The spelling of 21002022011022 in words is "twenty-one trillion, two billion, twenty-two million, eleven thousand, twenty-two".