120123343321021 has 4 divisors (see below), whose sum is σ = 124265527573500. Its totient is φ = 115981159068544.

The previous prime is 120123343321013. The next prime is 120123343321031.

120123343321021 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 54159870516921 + 65963472804100 = 7359339^2 + 8121790^2 .

It is a cyclic number.

It is not a de Polignac number, because 120123343321021 - 2³ = 120123343321013 is a prime.

It is a super-2 number, since 2×120123343321021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120123343321031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2071092126196 + ... + 2071092126253.

It is an arithmetic number, because the mean of its divisors is an integer number (31066381893375).

Almost surely, 2^{120123343321021} is an apocalyptic number.

It is an amenable number.

120123343321021 is a deficient number, since it is larger than the sum of its proper divisors (4142184252479).

120123343321021 is an equidigital number, since it uses as much as digits as its factorization.

120123343321021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4142184252478.

The product of its (nonzero) digits is 5184, while the sum is 28.

The spelling of 120123343321021 in words is "one hundred twenty trillion, one hundred twenty-three billion, three hundred forty-three million, three hundred twenty-one thousand, twenty-one".