2120211992 has 8 divisors (see below), whose sum is σ = 3975397500. Its totient is φ = 1060105992.

The previous prime is 2120211991. The next prime is 2120212019. The reversal of 2120211992 is 2991120212.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-4 number, since 4×2120211992⁴ (a number of 38 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120211991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132513242 + ... + 132513257.

Almost surely, 2^2120211992 is an apocalyptic number.

It is an amenable number.

2120211992 is a deficient number, since it is larger than the sum of its proper divisors (1855185508).

2120211992 is a wasteful number, since it uses less digits than its factorization.

2120211992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265026505 (or 265026501 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 2120211992 is about 46045.7597613504. The cubic root of 2120211992 is about 1284.6744757247.

The spelling of 2120211992 in words is "two billion, one hundred twenty million, two hundred eleven thousand, nine hundred ninety-two".