120102121021 has 8 divisors (see below), whose sum is σ = 124276408920. Its totient is φ = 115930022208.

The previous prime is 120102120973. The next prime is 120102121037. The reversal of 120102121021 is 120121201021.

It can be written as a sum of positive squares in 4 ways, for example, as 2429109796 + 117673011225 = 49286^2 + 343035^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120102121021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120102120992 and 120102121010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120102181021) 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, 435246 + ... + 655471.

It is an arithmetic number, because the mean of its divisors is an integer number (15534551115).

Almost surely, 2^120102121021 is an apocalyptic number.

It is an amenable number.

120102121021 is a deficient number, since it is larger than the sum of its proper divisors (4174287899).

120102121021 is a wasteful number, since it uses less digits than its factorization.

120102121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094543.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 120102121021 its reverse (120121201021), we get a palindrome (240223322042).

The spelling of 120102121021 in words is "one hundred twenty billion, one hundred two million, one hundred twenty-one thousand, twenty-one".