556535221201 has 12 divisors (see below), whose sum is σ = 610269237760. Its totient is φ = 506901142080.

The previous prime is 556535221163. The next prime is 556535221219. The reversal of 556535221201 is 102122535655.

It is not a de Polignac number, because 556535221201 - 2²⁵ = 556501666769 is a prime.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (556535221241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31051161 + ... + 31069078.

Almost surely, 2^556535221201 is an apocalyptic number.

It is an amenable number.

556535221201 is a deficient number, since it is larger than the sum of its proper divisors (53734016559).

556535221201 is a wasteful number, since it uses less digits than its factorization.

556535221201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62120304 (or 62120287 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 37.

Adding to 556535221201 its reverse (102122535655), we get a palindrome (658657756856).

The spelling of 556535221201 in words is "five hundred fifty-six billion, five hundred thirty-five million, two hundred twenty-one thousand, two hundred one".