2031201111021 has 16 divisors (see below), whose sum is σ = 2710707671808. Its totient is φ = 1352914617600.

The previous prime is 2031201111019. The next prime is 2031201111047. The reversal of 2031201111021 is 1201111021302.

It is not a de Polignac number, because 2031201111021 - 2¹ = 2031201111019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031201111061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30066601 + ... + 30134081.

It is an arithmetic number, because the mean of its divisors is an integer number (169419229488).

Almost surely, 2^{2031201111021} is an apocalyptic number.

It is an amenable number.

2031201111021 is a deficient number, since it is larger than the sum of its proper divisors (679506560787).

2031201111021 is a wasteful number, since it uses less digits than its factorization.

2031201111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76372.

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

Adding to 2031201111021 its reverse (1201111021302), we get a palindrome (3232312132323).

The spelling of 2031201111021 in words is "two trillion, thirty-one billion, two hundred one million, one hundred eleven thousand, twenty-one".