53222020021 has 4 divisors (see below), whose sum is σ = 54226209132. Its totient is φ = 52217830912.

The previous prime is 53222019989. The next prime is 53222020051. The reversal of 53222020021 is 12002022235.

53222020021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 47432484100 + 5789535921 = 217790^2 + 76089^2 .

It is a cyclic number.

It is not a de Polignac number, because 53222020021 - 2⁵ = 53222019989 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 (53222020051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 502094476 + ... + 502094581.

It is an arithmetic number, because the mean of its divisors is an integer number (13556552283).

Almost surely, 2^53222020021 is an apocalyptic number.

It is an amenable number.

53222020021 is a deficient number, since it is larger than the sum of its proper divisors (1004189111).

53222020021 is a wasteful number, since it uses less digits than its factorization.

53222020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1004189110.

The product of its (nonzero) digits is 480, while the sum is 19.

Adding to 53222020021 its reverse (12002022235), we get a palindrome (65224042256).

The spelling of 53222020021 in words is "fifty-three billion, two hundred twenty-two million, twenty thousand, twenty-one".