21000210021022 has 16 divisors (see below), whose sum is σ = 31825682929152. Its totient is φ = 10391653278720.

The previous prime is 21000210021001. The next prime is 21000210021067. The reversal of 21000210021022 is 22012001200012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21000210020993 and 21000210021011.

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, 9139747 + ... + 11204257.

It is an arithmetic number, because the mean of its divisors is an integer number (1989105183072).

Almost surely, 2^{21000210021022} is an apocalyptic number.

21000210021022 is a deficient number, since it is larger than the sum of its proper divisors (10825472908130).

21000210021022 is a wasteful number, since it uses less digits than its factorization.

21000210021022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2117043.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 21000210021022 its reverse (22012001200012), we get a palindrome (43012211221034).

The spelling of 21000210021022 in words is "twenty-one trillion, two hundred ten million, twenty-one thousand, twenty-two".