2120332181 has 8 divisors (see below), whose sum is σ = 2316514464. Its totient is φ = 1924720720.

The previous prime is 2120332177. The next prime is 2120332213. The reversal of 2120332181 is 1812330212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2120332181 - 2² = 2120332177 is a prime.

It is a super-2 number, since 2×2120332181² = 8991617115568433522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120332381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134915 + ... + 149808.

It is an arithmetic number, because the mean of its divisors is an integer number (289564308).

Almost surely, 2^2120332181 is an apocalyptic number.

It is an amenable number.

2120332181 is a deficient number, since it is larger than the sum of its proper divisors (196182283).

2120332181 is a wasteful number, since it uses less digits than its factorization.

2120332181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285411.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 2120332181 is about 46047.0648467413. The cubic root of 2120332181 is about 1284.6987501563.

Adding to 2120332181 its reverse (1812330212), we get a palindrome (3932662393).

The spelling of 2120332181 in words is "two billion, one hundred twenty million, three hundred thirty-two thousand, one hundred eighty-one".