120131001020 has 24 divisors (see below), whose sum is σ = 252465267264. Its totient is φ = 48016178496.

The previous prime is 120131000963. The next prime is 120131001047. The reversal of 120131001020 is 20100131021.

It is a junction number, because it is equal to n+sod(n) for n = 120131000992 and 120131001010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2236667 + ... + 2289746.

It is an arithmetic number, because the mean of its divisors is an integer number (10519386136).

Almost surely, 2^120131001020 is an apocalyptic number.

120131001020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120131001020 is an abundant number, since it is smaller than the sum of its proper divisors (132334266244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

120131001020 is a wasteful number, since it uses less digits than its factorization.

120131001020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4527749 (or 4527747 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 120131001020 its reverse (20100131021), we get a palindrome (140231132041).

The spelling of 120131001020 in words is "one hundred twenty billion, one hundred thirty-one million, one thousand, twenty".