120121201021 has 8 divisors (see below), whose sum is σ = 120495506040. Its totient is φ = 119747002368.

The previous prime is 120121200989. The next prime is 120121201033. The reversal of 120121201021 is 120102121021.

It can be written as a sum of positive squares in 4 ways, for example, as 21782512921 + 98338688100 = 147589^2 + 313590^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 120121201021 - 2⁵ = 120121200989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120121200992 and 120121201010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120121205021) 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, 2652315 + ... + 2697223.

It is an arithmetic number, because the mean of its divisors is an integer number (15061938255).

Almost surely, 2^120121201021 is an apocalyptic number.

It is an amenable number.

120121201021 is a deficient number, since it is larger than the sum of its proper divisors (374305019).

120121201021 is an equidigital number, since it uses as much as digits as its factorization.

120121201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53183.

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

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

The spelling of 120121201021 in words is "one hundred twenty billion, one hundred twenty-one million, two hundred one thousand, twenty-one".