2101551222 has 16 divisors (see below), whose sum is σ = 4207191552. Its totient is φ = 699835560.

The previous prime is 2101551187. The next prime is 2101551233. The reversal of 2101551222 is 2221551012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163678 + ... + 176049.

It is an arithmetic number, because the mean of its divisors is an integer number (262949472).

Almost surely, 2^2101551222 is an apocalyptic number.

2101551222 is an abundant number, since it is smaller than the sum of its proper divisors (2105640330).

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

2101551222 is a wasteful number, since it uses less digits than its factorization.

2101551222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340763.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 2101551222 is about 45842.6790447504. The cubic root of 2101551222 is about 1280.8943989011.

The spelling of 2101551222 in words is "two billion, one hundred one million, five hundred fifty-one thousand, two hundred twenty-two".