2122391550 has 48 divisors (see below), whose sum is σ = 5268055680. Its totient is φ = 565484640.

The previous prime is 2122391543. The next prime is 2122391563. The reversal of 2122391550 is 551932212.

It is a super-2 number, since 2×2122391550² = 9009091783022805000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 190021 + ... + 200879.

It is an arithmetic number, because the mean of its divisors is an integer number (109751160).

Almost surely, 2^2122391550 is an apocalyptic number.

2122391550 is an abundant number, since it is smaller than the sum of its proper divisors (3145664130).

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

2122391550 is a wasteful number, since it uses less digits than its factorization.

2122391550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12177 (or 12172 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 2122391550 is about 46069.4209861596. The cubic root of 2122391550 is about 1285.1145360619.

The spelling of 2122391550 in words is "two billion, one hundred twenty-two million, three hundred ninety-one thousand, five hundred fifty".