21022111202000 has 80 divisors (see below), whose sum is σ = 50837778782544. Its totient is φ = 8407800000000.

The previous prime is 21022111201961. The next prime is 21022111202039. The reversal of 21022111202000 is 20211122012.

It is an interprime number because it is at equal distance from previous prime (21022111201961) and next prime (21022111202039).

It can be written as a sum of positive squares in 8 ways, for example, as 3453338355856 + 17568772846144 = 1858316^2 + 4191512^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15553250 + ... + 16850750.

Almost surely, 2^{21022111202000} is an apocalyptic number.

21022111202000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21022111202000 is an abundant number, since it is smaller than the sum of its proper divisors (29815667580544).

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

21022111202000 is a wasteful number, since it uses less digits than its factorization.

21022111202000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1305625 (or 1305609 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21022111202000 its reverse (20211122012), we get a palindrome (21042322324012).

The spelling of 21022111202000 in words is "twenty-one trillion, twenty-two billion, one hundred eleven million, two hundred two thousand".