12002099220 has 72 divisors (see below), whose sum is σ = 37390344264. Its totient is φ = 3114056448.

The previous prime is 12002099209. The next prime is 12002099237. The reversal of 12002099220 is 2299020021.

It can be written as a sum of positive squares in 4 ways, for example, as 455737104 + 11546362116 = 21348^2 + 107454^2 .

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, 894399 + ... + 907718.

It is an arithmetic number, because the mean of its divisors is an integer number (519310337).

Almost surely, 2^12002099220 is an apocalyptic number.

12002099220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12002099220 is an abundant number, since it is smaller than the sum of its proper divisors (25388245044).

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

12002099220 is a wasteful number, since it uses less digits than its factorization.

12002099220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1802169 (or 1802164 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The spelling of 12002099220 in words is "twelve billion, two million, ninety-nine thousand, two hundred twenty".