21201131022000 has 80 divisors (see below), whose sum is σ = 68352446434272. Its totient is φ = 5653634937600.

The previous prime is 21201131021981. The next prime is 21201131022083. The reversal of 21201131022000 is 22013110212.

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

It is a super-2 number, since 2×21201131022000² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 1766754919 + ... + 1766766918.

Almost surely, 2^{21201131022000} is an apocalyptic number.

21201131022000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21201131022000 is an abundant number, since it is smaller than the sum of its proper divisors (47151315412272).

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

21201131022000 is a wasteful number, since it uses less digits than its factorization.

21201131022000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3533521863 (or 3533521847 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 21201131022000 its reverse (22013110212), we get a palindrome (21223144132212).

The spelling of 21201131022000 in words is "twenty-one trillion, two hundred one billion, one hundred thirty-one million, twenty-two thousand".