2120221601608 has 32 divisors (see below), whose sum is σ = 4525374173760. Its totient is φ = 921835478080.

The previous prime is 2120221601581. The next prime is 2120221601651. The reversal of 2120221601608 is 8061061220212.

It is a self number, because there is not a number n which added to its sum of digits gives 2120221601608.

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, 523768135 + ... + 523772182.

It is an arithmetic number, because the mean of its divisors is an integer number (141417942930).

Almost surely, 2^{2120221601608} is an apocalyptic number.

It is an amenable number.

2120221601608 is an abundant number, since it is smaller than the sum of its proper divisors (2405152572152).

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

2120221601608 is a wasteful number, since it uses less digits than its factorization.

2120221601608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047540357 (or 1047540353 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The spelling of 2120221601608 in words is "two trillion, one hundred twenty billion, two hundred twenty-one million, six hundred one thousand, six hundred eight".