120211311231 has 72 divisors (see below), whose sum is σ = 195439188672. Its totient is φ = 71115264000.

The previous prime is 120211311229. The next prime is 120211311247. The reversal of 120211311231 is 132113112021.

120211311231 is a `hidden beast` number, since 120 + 2 + 1 + 1 + 311 + 231 = 666.

It is not a de Polignac number, because 120211311231 - 2¹ = 120211311229 is a prime.

It is a super-2 number, since 2×120211311231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120211311221) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 20521455 + ... + 20527311.

It is an arithmetic number, because the mean of its divisors is an integer number (2714433176).

Almost surely, 2^120211311231 is an apocalyptic number.

120211311231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

120211311231 is a deficient number, since it is larger than the sum of its proper divisors (75227877441).

120211311231 is a wasteful number, since it uses less digits than its factorization.

120211311231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6333 (or 6319 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 120211311231 its reverse (132113112021), we get a palindrome (252324423252).

The spelling of 120211311231 in words is "one hundred twenty billion, two hundred eleven million, three hundred eleven thousand, two hundred thirty-one".