10221535555 has 32 divisors (see below), whose sum is σ = 15502007808. Its totient is φ = 6284563200.

The previous prime is 10221535531. The next prime is 10221535561. The reversal of 10221535555 is 55553512201.

It is not a de Polignac number, because 10221535555 - 2²⁷ = 10087317827 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10221535555.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 153741 + ... + 209950.

It is an arithmetic number, because the mean of its divisors is an integer number (484437744).

Almost surely, 2^10221535555 is an apocalyptic number.

10221535555 is a deficient number, since it is larger than the sum of its proper divisors (5280472253).

10221535555 is a wasteful number, since it uses less digits than its factorization.

10221535555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363787.

The product of its (nonzero) digits is 37500, while the sum is 34.

The spelling of 10221535555 in words is "ten billion, two hundred twenty-one million, five hundred thirty-five thousand, five hundred fifty-five".