21021012202022 has 16 divisors (see below), whose sum is σ = 36053287868160. Its totient is φ = 9004688491848.

The previous prime is 21021012201947. The next prime is 21021012202067. The reversal of 21021012202022 is 22020221012012.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 359697872 + ... + 359756307.

It is an arithmetic number, because the mean of its divisors is an integer number (2253330491760).

Almost surely, 2^{21021012202022} is an apocalyptic number.

21021012202022 is a deficient number, since it is larger than the sum of its proper divisors (15032275666138).

21021012202022 is a wasteful number, since it uses less digits than its factorization.

21021012202022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719456275.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 21021012202022 its reverse (22020221012012), we get a palindrome (43041233214034).

The spelling of 21021012202022 in words is "twenty-one trillion, twenty-one billion, twelve million, two hundred two thousand, twenty-two".