120311021013 has 16 divisors (see below), whose sum is σ = 167414800320. Its totient is φ = 76756246784.

The previous prime is 120311020969. The next prime is 120311021041. The reversal of 120311021013 is 310120113021.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 120311021013 - 2⁸ = 120311020757 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120311020983 and 120311021001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120311021093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6109131 + ... + 6128792.

It is an arithmetic number, because the mean of its divisors is an integer number (10463425020).

Almost surely, 2^120311021013 is an apocalyptic number.

It is an amenable number.

120311021013 is a deficient number, since it is larger than the sum of its proper divisors (47103779307).

120311021013 is a wasteful number, since it uses less digits than its factorization.

120311021013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12238068.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 120311021013 its reverse (310120113021), we get a palindrome (430431134034).

The spelling of 120311021013 in words is "one hundred twenty billion, three hundred eleven million, twenty-one thousand, thirteen".