220921969340 has 48 divisors (see below), whose sum is σ = 479083659264. Its totient is φ = 85485710400.

The previous prime is 220921969339. The next prime is 220921969361. The reversal of 220921969340 is 43969129022.

It is a congruent number.

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, 1599635 + ... + 1732245.

It is an arithmetic number, because the mean of its divisors is an integer number (9980909568).

Almost surely, 2^220921969340 is an apocalyptic number.

220921969340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220921969340 is an abundant number, since it is smaller than the sum of its proper divisors (258161689924).

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

220921969340 is a wasteful number, since it uses less digits than its factorization.

220921969340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135338 (or 135336 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 47.

The spelling of 220921969340 in words is "two hundred twenty billion, nine hundred twenty-one million, nine hundred sixty-nine thousand, three hundred forty".