2120199999970 has 24 divisors (see below), whose sum is σ = 4132508168916. Its totient is φ = 782843076288.

The previous prime is 2120199999887. The next prime is 2120199999971. The reversal of 2120199999970 is 799999910212.

It can be written as a sum of positive squares in 6 ways, for example, as 8616109329 + 2111583890641 = 92823^2 + 1453129^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2120199999896 and 2120199999905.

It is not an unprimeable number, because it can be changed into a prime (2120199999971) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 627276417 + ... + 627279796.

Almost surely, 2^{2120199999970} is an apocalyptic number.

2120199999970 is a deficient number, since it is larger than the sum of its proper divisors (2012308168946).

2120199999970 is a wasteful number, since it uses less digits than its factorization.

2120199999970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254556246 (or 1254556233 counting only the distinct ones).

The product of its (nonzero) digits is 14880348, while the sum is 67.

The spelling of 2120199999970 in words is "two trillion, one hundred twenty billion, one hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred seventy".