2221533964 has 24 divisors (see below), whose sum is σ = 4229908928. Its totient is φ = 1014750720.

The previous prime is 2221533961. The next prime is 2221533971. The reversal of 2221533964 is 4693351222.

It is not an unprimeable number, because it can be changed into a prime (2221533961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215172 + ... + 225259.

Almost surely, 2^2221533964 is an apocalyptic number.

It is an amenable number.

2221533964 is a deficient number, since it is larger than the sum of its proper divisors (2008374964).

2221533964 is a wasteful number, since it uses less digits than its factorization.

2221533964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440545 (or 440543 counting only the distinct ones).

The product of its digits is 77760, while the sum is 37.

The square root of 2221533964 is about 47133.1514329352. The cubic root of 2221533964 is about 1304.8211444866.

The spelling of 2221533964 in words is "two billion, two hundred twenty-one million, five hundred thirty-three thousand, nine hundred sixty-four".