120122021111021 has 4 divisors (see below), whose sum is σ = 120531993879612. Its totient is φ = 119712048342432.

The previous prime is 120122021110901. The next prime is 120122021111041. The reversal of 120122021111021 is 120111120221021.

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 117919509855625 + 2202511255396 = 10859075^2 + 1484086^2 .

It is a cyclic number.

It is not a de Polignac number, because 120122021111021 - 2¹⁸ = 120122020848877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120122021111041) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 204986383856 + ... + 204986384441.

It is an arithmetic number, because the mean of its divisors is an integer number (30132998469903).

Almost surely, 2^{120122021111021} is an apocalyptic number.

It is an amenable number.

120122021111021 is a deficient number, since it is larger than the sum of its proper divisors (409972768591).

120122021111021 is an equidigital number, since it uses as much as digits as its factorization.

120122021111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409972768590.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 120122021111021 its reverse (120111120221021), we get a palindrome (240233141332042).

The spelling of 120122021111021 in words is "one hundred twenty trillion, one hundred twenty-two billion, twenty-one million, one hundred eleven thousand, twenty-one".