120421531233 has 24 divisors (see below), whose sum is σ = 177694403328. Its totient is φ = 78550227072.

The previous prime is 120421531231. The next prime is 120421531247. The reversal of 120421531233 is 332135124021.

120421531233 is a `hidden beast` number, since 1 + 2 + 0 + 421 + 5 + 3 + 1 + 233 = 666.

It is not a de Polignac number, because 120421531233 - 2¹ = 120421531231 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120421531197 and 120421531206.

It is not an unprimeable number, because it can be changed into a prime (120421531231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1493241 + ... + 1571817.

It is an arithmetic number, because the mean of its divisors is an integer number (7403933472).

Almost surely, 2^120421531233 is an apocalyptic number.

It is an amenable number.

120421531233 is a deficient number, since it is larger than the sum of its proper divisors (57272872095).

120421531233 is a wasteful number, since it uses less digits than its factorization.

120421531233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82253 (or 82250 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 120421531233 its reverse (332135124021), we get a palindrome (452556655254).

The spelling of 120421531233 in words is "one hundred twenty billion, four hundred twenty-one million, five hundred thirty-one thousand, two hundred thirty-three".