303224040021 has 32 divisors (see below), whose sum is σ = 469098620928. Its totient is φ = 170642957760.

The previous prime is 303224040001. The next prime is 303224040061. The reversal of 303224040021 is 120040422303.

It is not a de Polignac number, because 303224040021 - 2¹⁸ = 303223777877 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 303224040021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (303224040001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 278136 + ... + 826926.

It is an arithmetic number, because the mean of its divisors is an integer number (14659331904).

Almost surely, 2^303224040021 is an apocalyptic number.

It is an amenable number.

303224040021 is a deficient number, since it is larger than the sum of its proper divisors (165874580907).

303224040021 is a wasteful number, since it uses less digits than its factorization.

303224040021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549201.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 303224040021 its reverse (120040422303), we get a palindrome (423264462324).

The spelling of 303224040021 in words is "three hundred three billion, two hundred twenty-four million, forty thousand, twenty-one".