201131112000021 has 48 divisors (see below), whose sum is σ = 313155761149440. Its totient is φ = 114491141331840.

The previous prime is 201131111999999. The next prime is 201131112000031. The reversal of 201131112000021 is 120000211131102.

It is not a de Polignac number, because 201131112000021 - 2⁷ = 201131111999893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201131112000031) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 179460060 + ... + 180577338.

It is an arithmetic number, because the mean of its divisors is an integer number (6524078357280).

Almost surely, 2^{201131112000021} is an apocalyptic number.

201131112000021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

201131112000021 is a deficient number, since it is larger than the sum of its proper divisors (112024649149419).

201131112000021 is a wasteful number, since it uses less digits than its factorization.

201131112000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121994 (or 1121987 counting only the distinct ones).

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

Adding to 201131112000021 its reverse (120000211131102), we get a palindrome (321131323131123).

The spelling of 201131112000021 in words is "two hundred one trillion, one hundred thirty-one billion, one hundred twelve million, twenty-one", and thus it is an aban number.