221031353004553 has 16 divisors (see below), whose sum is σ = 272039062503040. Its totient is φ = 174881644793856.

The previous prime is 221031353004541. The next prime is 221031353004559. The reversal of 221031353004553 is 355400353130122.

It is not a de Polignac number, because 221031353004553 - 2³³ = 221022763069961 is a prime.

It is a super-2 number, since 2×221031353004553² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221031353004559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60495526 + ... + 64045072.

It is an arithmetic number, because the mean of its divisors is an integer number (17002441406440).

Almost surely, 2^{221031353004553} is an apocalyptic number.

It is an amenable number.

221031353004553 is a deficient number, since it is larger than the sum of its proper divisors (51007709498487).

221031353004553 is a wasteful number, since it uses less digits than its factorization.

221031353004553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4233856.

The product of its (nonzero) digits is 162000, while the sum is 37.

The spelling of 221031353004553 in words is "two hundred twenty-one trillion, thirty-one billion, three hundred fifty-three million, four thousand, five hundred fifty-three".