120001102221021 has 16 divisors (see below), whose sum is σ = 182858980556928. Its totient is φ = 68571999115200.

The previous prime is 120001102220933. The next prime is 120001102221059. The reversal of 120001102221021 is 120122201100021.

It is not a de Polignac number, because 120001102221021 - 2⁹ = 120001102220509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120001102221071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37222191 + ... + 40317411.

It is an arithmetic number, because the mean of its divisors is an integer number (11428686284808).

Almost surely, 2^{120001102221021} is an apocalyptic number.

It is an amenable number.

120001102221021 is a deficient number, since it is larger than the sum of its proper divisors (62857878335907).

120001102221021 is a wasteful number, since it uses less digits than its factorization.

120001102221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4941412.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 120001102221021 its reverse (120122201100021), we get a palindrome (240123303321042).

The spelling of 120001102221021 in words is "one hundred twenty trillion, one billion, one hundred two million, two hundred twenty-one thousand, twenty-one".