215154092220 has 48 divisors (see below), whose sum is σ = 616441499520. Its totient is φ = 56040134976.

The previous prime is 215154092203. The next prime is 215154092233. The reversal of 215154092220 is 22290451512.

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, 41693950 + ... + 41699109.

It is an arithmetic number, because the mean of its divisors is an integer number (12842531240).

Almost surely, 2^215154092220 is an apocalyptic number.

215154092220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215154092220 is an abundant number, since it is smaller than the sum of its proper divisors (401287407300).

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

215154092220 is a wasteful number, since it uses less digits than its factorization.

215154092220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83393114 (or 83393112 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 33.

The spelling of 215154092220 in words is "two hundred fifteen billion, one hundred fifty-four million, ninety-two thousand, two hundred twenty".