21131022143201 has 16 divisors (see below), whose sum is σ = 21751540489728. Its totient is φ = 20513156040000.

The previous prime is 21131022143191. The next prime is 21131022143213. The reversal of 21131022143201 is 10234122013112.

It is a cyclic number.

It is not a de Polignac number, because 21131022143201 - 2¹⁴ = 21131022126817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21131022943201) 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, 29123636 + ... + 29840378.

It is an arithmetic number, because the mean of its divisors is an integer number (1359471280608).

Almost surely, 2^{21131022143201} is an apocalyptic number.

It is an amenable number.

21131022143201 is a deficient number, since it is larger than the sum of its proper divisors (620518346527).

21131022143201 is a wasteful number, since it uses less digits than its factorization.

21131022143201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718592.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 21131022143201 its reverse (10234122013112), we get a palindrome (31365144156313).

The spelling of 21131022143201 in words is "twenty-one trillion, one hundred thirty-one billion, twenty-two million, one hundred forty-three thousand, two hundred one".