221631034140 has 96 divisors (see below), whose sum is σ = 689586912000. Its totient is φ = 59095768896.

The previous prime is 221631034087. The next prime is 221631034153. The reversal of 221631034140 is 41430136122.

It is a happy number.

221631034140 is a `hidden beast` number, since 2 + 2 + 1 + 6 + 310 + 341 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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, 10454071 + ... + 10475249.

It is an arithmetic number, because the mean of its divisors is an integer number (7183197000).

Almost surely, 2^221631034140 is an apocalyptic number.

221631034140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221631034140 is an abundant number, since it is smaller than the sum of its proper divisors (467955877860).

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

221631034140 is a wasteful number, since it uses less digits than its factorization.

221631034140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40576 (or 40568 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The spelling of 221631034140 in words is "two hundred twenty-one billion, six hundred thirty-one million, thirty-four thousand, one hundred forty".