21031122301 has 16 divisors (see below), whose sum is σ = 24224054400. Its totient is φ = 17885649600.

The previous prime is 21031122271. The next prime is 21031122311. The reversal of 21031122301 is 10322113012.

It is not a de Polignac number, because 21031122301 - 2²⁹ = 20494251389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21031122311) 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, 756750 + ... + 784048.

It is an arithmetic number, because the mean of its divisors is an integer number (1514003400).

Almost surely, 2^21031122301 is an apocalyptic number.

It is an amenable number.

21031122301 is a deficient number, since it is larger than the sum of its proper divisors (3192932099).

21031122301 is a wasteful number, since it uses less digits than its factorization.

21031122301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28164.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21031122301 its reverse (10322113012), we get a palindrome (31353235313).

The spelling of 21031122301 in words is "twenty-one billion, thirty-one million, one hundred twenty-two thousand, three hundred one".