2121201970 has 32 divisors (see below), whose sum is σ = 3985666560. Its totient is φ = 811873920.

The previous prime is 2121201961. The next prime is 2121201991. The reversal of 2121201970 is 791021212.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10852 + ... + 66031.

It is an arithmetic number, because the mean of its divisors is an integer number (124552080).

Almost surely, 2^2121201970 is an apocalyptic number.

2121201970 is a deficient number, since it is larger than the sum of its proper divisors (1864464590).

2121201970 is a wasteful number, since it uses less digits than its factorization.

2121201970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77010.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 2121201970 is about 46056.5084434328. The cubic root of 2121201970 is about 1284.8743930882.

The spelling of 2121201970 in words is "two billion, one hundred twenty-one million, two hundred one thousand, nine hundred seventy".