2101220198 has 64 divisors (see below), whose sum is σ = 4070449152. Its totient is φ = 789778080.

The previous prime is 2101220183. The next prime is 2101220227. The reversal of 2101220198 is 8910221012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 547715 + ... + 551537.

It is an arithmetic number, because the mean of its divisors is an integer number (63600768).

Almost surely, 2^2101220198 is an apocalyptic number.

2101220198 is a deficient number, since it is larger than the sum of its proper divisors (1969228954).

2101220198 is a wasteful number, since it uses less digits than its factorization.

2101220198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3969.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 2101220198 is about 45839.0684678474. The cubic root of 2101220198 is about 1280.8271423833.

The spelling of 2101220198 in words is "two billion, one hundred one million, two hundred twenty thousand, one hundred ninety-eight".