2221220431140 has 48 divisors (see below), whose sum is σ = 6228854976960. Its totient is φ = 591426613120.

The previous prime is 2221220431123. The next prime is 2221220431153. The reversal of 2221220431140 is 411340221222.

It is a self number, because there is not a number n which added to its sum of digits gives 2221220431140.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28048731 + ... + 28127810.

It is an arithmetic number, because the mean of its divisors is an integer number (129767812020).

Almost surely, 2^{2221220431140} is an apocalyptic number.

2221220431140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221220431140 is an abundant number, since it is smaller than the sum of its proper divisors (4007634545820).

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

2221220431140 is a wasteful number, since it uses less digits than its factorization.

2221220431140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56177212 (or 56177210 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 2221220431140 its reverse (411340221222), we get a palindrome (2632560652362).

The spelling of 2221220431140 in words is "two trillion, two hundred twenty-one billion, two hundred twenty million, four hundred thirty-one thousand, one hundred forty".