2131001312021 has 8 divisors (see below), whose sum is σ = 2180607823680. Its totient is φ = 2081396997792.

The previous prime is 2131001311987. The next prime is 2131001312053. The reversal of 2131001312021 is 1202131001312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2131001312021 - 2²⁶ = 2130934203157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131001302021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1500776 + ... + 2552318.

It is an arithmetic number, because the mean of its divisors is an integer number (272575977960).

Almost surely, 2^{2131001312021} is an apocalyptic number.

It is an amenable number.

2131001312021 is a deficient number, since it is larger than the sum of its proper divisors (49606511659).

2131001312021 is a wasteful number, since it uses less digits than its factorization.

2131001312021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1098715.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 2131001312021 its reverse (1202131001312), we get a palindrome (3333132313333).

The spelling of 2131001312021 in words is "two trillion, one hundred thirty-one billion, one million, three hundred twelve thousand, twenty-one".