53120214021 has 16 divisors (see below), whose sum is σ = 83556220928. Its totient is φ = 29375233200.

The previous prime is 53120214011. The next prime is 53120214053. The reversal of 53120214021 is 12041202135.

It is not a de Polignac number, because 53120214021 - 2²² = 53116019717 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53120214011) 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, 40798285 + ... + 40799586.

It is an arithmetic number, because the mean of its divisors is an integer number (5222263808).

Almost surely, 2^53120214021 is an apocalyptic number.

It is an amenable number.

53120214021 is a deficient number, since it is larger than the sum of its proper divisors (30436006907).

53120214021 is a wasteful number, since it uses less digits than its factorization.

53120214021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81597912.

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 53120214021 its reverse (12041202135), we get a palindrome (65161416156).

The spelling of 53120214021 in words is "fifty-three billion, one hundred twenty million, two hundred fourteen thousand, twenty-one".