21000102101022 has 16 divisors (see below), whose sum is σ = 45818404584192. Its totient is φ = 6363667303320.

The previous prime is 21000102101003. The next prime is 21000102101057. The reversal of 21000102101022 is 22010120100012.

It is a junction number, because it is equal to n+sod(n) for n = 21000102100989 and 21000102101007.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159091682518 + ... + 159091682649.

It is an arithmetic number, because the mean of its divisors is an integer number (2863650286512).

Almost surely, 2^{21000102101022} is an apocalyptic number.

21000102101022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21000102101022 is an abundant number, since it is smaller than the sum of its proper divisors (24818302483170).

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

21000102101022 is a wasteful number, since it uses less digits than its factorization.

21000102101022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318183365183.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21000102101022 its reverse (22010120100012), we get a palindrome (43010222201034).

The spelling of 21000102101022 in words is "twenty-one trillion, one hundred two million, one hundred one thousand, twenty-two".