54202012221 has 16 divisors (see below), whose sum is σ = 86184566784. Its totient is φ = 29625944304.

The previous prime is 54202012171. The next prime is 54202012223. The reversal of 54202012221 is 12221020245.

54202012221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 54202012221 - 2⁶ = 54202012157 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54202012223) 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, 56109261 + ... + 56110226.

It is an arithmetic number, because the mean of its divisors is an integer number (5386535424).

Almost surely, 2^54202012221 is an apocalyptic number.

It is an amenable number.

54202012221 is a deficient number, since it is larger than the sum of its proper divisors (31982554563).

54202012221 is a wasteful number, since it uses less digits than its factorization.

54202012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112219520.

The product of its (nonzero) digits is 640, while the sum is 21.

Adding to 54202012221 its reverse (12221020245), we get a palindrome (66423032466).

The spelling of 54202012221 in words is "fifty-four billion, two hundred two million, twelve thousand, two hundred twenty-one".