21202111131000 has 128 divisors (see below), whose sum is σ = 66154449254400. Its totient is φ = 5653566172800.

The previous prime is 21202111130923. The next prime is 21202111131029. The reversal of 21202111131000 is 13111120212.

It is a super-2 number, since 2×21202111131000² (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 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 31 ways as a sum of consecutive naturals, for example, 53511621 + ... + 53906379.

It is an arithmetic number, because the mean of its divisors is an integer number (516831634800).

Almost surely, 2^{21202111131000} is an apocalyptic number.

21202111131000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21202111131000 is an abundant number, since it is smaller than the sum of its proper divisors (44952338123400).

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

21202111131000 is a wasteful number, since it uses less digits than its factorization.

21202111131000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412686 (or 412672 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 21202111131000 its reverse (13111120212), we get a palindrome (21215222251212).

The spelling of 21202111131000 in words is "twenty-one trillion, two hundred two billion, one hundred eleven million, one hundred thirty-one thousand".