2120172102308 has 24 divisors (see below), whose sum is σ = 3995854906680. Its totient is φ = 978505228800.

The previous prime is 2120172102281. The next prime is 2120172102311. The reversal of 2120172102308 is 8032012710212.

It can be written as a sum of positive squares in 4 ways, for example, as 55484744704 + 2064687357604 = 235552^2 + 1436902^2 .

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, 720188 + ... + 2181516.

It is an arithmetic number, because the mean of its divisors is an integer number (166493954445).

Almost surely, 2^{2120172102308} is an apocalyptic number.

It is an amenable number.

2120172102308 is a deficient number, since it is larger than the sum of its proper divisors (1875682804372).

2120172102308 is a wasteful number, since it uses less digits than its factorization.

2120172102308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1489247 (or 1489245 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 29.

The spelling of 2120172102308 in words is "two trillion, one hundred twenty billion, one hundred seventy-two million, one hundred two thousand, three hundred eight".