221081911032 has 64 divisors (see below), whose sum is σ = 587098886400. Its totient is φ = 69135971840.

The previous prime is 221081911031. The next prime is 221081911033. The reversal of 221081911032 is 230119180122.

It is an interprime number because it is at equal distance from previous prime (221081911031) and next prime (221081911033).

It is a super-2 number, since 2×221081911032² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221081911031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 744282 + ... + 998057.

It is an arithmetic number, because the mean of its divisors is an integer number (9173420100).

Almost surely, 2^221081911032 is an apocalyptic number.

It is an amenable number.

221081911032 is an abundant number, since it is smaller than the sum of its proper divisors (366016975368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221081911032 is a wasteful number, since it uses less digits than its factorization.

221081911032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1742676 (or 1742672 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 30.

The spelling of 221081911032 in words is "two hundred twenty-one billion, eighty-one million, nine hundred eleven thousand, thirty-two".