2131033201221 has 16 divisors (see below), whose sum is σ = 2933174010368. Its totient is φ = 1374794942400.

The previous prime is 2131033201217. The next prime is 2131033201223. The reversal of 2131033201221 is 1221023301312.

It is not a de Polignac number, because 2131033201221 - 2² = 2131033201217 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 (2131033201223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1468611 + ... + 2533551.

It is an arithmetic number, because the mean of its divisors is an integer number (183323375648).

Almost surely, 2^{2131033201221} is an apocalyptic number.

It is an amenable number.

2131033201221 is a deficient number, since it is larger than the sum of its proper divisors (802140809147).

2131033201221 is a wasteful number, since it uses less digits than its factorization.

2131033201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1086492.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 2131033201221 its reverse (1221023301312), we get a palindrome (3352056502533).

The spelling of 2131033201221 in words is "two trillion, one hundred thirty-one billion, thirty-three million, two hundred one thousand, two hundred twenty-one".