2221996400 has 60 divisors (see below), whose sum is σ = 5749001832. Its totient is φ = 820427520.

The previous prime is 2221996369. The next prime is 2221996417. The reversal of 2221996400 is 46991222.

It is a super-2 number, since 2×2221996400² = 9874536003225920000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 208454 + ... + 218853.

Almost surely, 2^2221996400 is an apocalyptic number.

2221996400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221996400 is an abundant number, since it is smaller than the sum of its proper divisors (3527005432).

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

2221996400 is a wasteful number, since it uses less digits than its factorization.

2221996400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427338 (or 427327 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 2221996400 is about 47138.0568118797. The cubic root of 2221996400 is about 1304.9116756867.

The spelling of 2221996400 in words is "two billion, two hundred twenty-one million, nine hundred ninety-six thousand, four hundred".