221011020211180 has 48 divisors (see below), whose sum is σ = 470828731484160. Its totient is φ = 87128045323200.

The previous prime is 221011020211169. The next prime is 221011020211181. The reversal of 221011020211180 is 81112020110122.

It is a happy number.

It is a super-2 number, since 2×221011020211180² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221011020211181) 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, 23919540 + ... + 31845979.

It is an arithmetic number, because the mean of its divisors is an integer number (9808931905920).

Almost surely, 2^{221011020211180} is an apocalyptic number.

221011020211180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221011020211180 is an abundant number, since it is smaller than the sum of its proper divisors (249817711272980).

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

221011020211180 is a wasteful number, since it uses less digits than its factorization.

221011020211180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55768390 (or 55768388 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 22.

The spelling of 221011020211180 in words is "two hundred twenty-one trillion, eleven billion, twenty million, two hundred eleven thousand, one hundred eighty".