120021311231 has 8 divisors (see below), whose sum is σ = 123897081984. Its totient is φ = 116145797760.

The previous prime is 120021311209. The next prime is 120021311239. The reversal of 120021311231 is 132113120021.

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 120021311231 - 2⁶ = 120021311167 is a prime.

It is a super-2 number, since 2×120021311231² (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 (120021311239) 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, 1449995 + ... + 1530531.

It is an arithmetic number, because the mean of its divisors is an integer number (15487135248).

Almost surely, 2^120021311231 is an apocalyptic number.

120021311231 is a deficient number, since it is larger than the sum of its proper divisors (3875770753).

120021311231 is an equidigital number, since it uses as much as digits as its factorization.

120021311231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128641.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 120021311231 its reverse (132113120021), we get a palindrome (252134431252).

The spelling of 120021311231 in words is "one hundred twenty billion, twenty-one million, three hundred eleven thousand, two hundred thirty-one".