120010002021 has 96 divisors (see below), whose sum is σ = 216728628480. Its totient is φ = 62306399232.

The previous prime is 120010001987. The next prime is 120010002031. The reversal of 120010002021 is 120200010021.

It is not a de Polignac number, because 120010002021 - 2⁶ = 120010001957 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 120010001994 and 120010002012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120010002031) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 16542631 + ... + 16549883.

It is an arithmetic number, because the mean of its divisors is an integer number (2257589880).

Almost surely, 2^120010002021 is an apocalyptic number.

It is an amenable number.

120010002021 is a deficient number, since it is larger than the sum of its proper divisors (96718626459).

120010002021 is a wasteful number, since it uses less digits than its factorization.

120010002021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7595 (or 7592 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 120010002021 its reverse (120200010021), we get a palindrome (240210012042).

The spelling of 120010002021 in words is "one hundred twenty billion, ten million, two thousand, twenty-one".