120002220122021 has 4 divisors (see below), whose sum is σ = 120002349563052. Its totient is φ = 120002090680992.

The previous prime is 120002220122011. The next prime is 120002220122111. The reversal of 120002220122021 is 120221022200021.

It is a happy number.

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 106401576832996 + 13600643289025 = 10315114^2 + 3687905^2 .

It is a cyclic number.

It is not a de Polignac number, because 120002220122021 - 2²⁶ = 120002153013157 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 (120002220122011) 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, 63319790 + ... + 65187423.

It is an arithmetic number, because the mean of its divisors is an integer number (30000587390763).

Almost surely, 2^{120002220122021} is an apocalyptic number.

It is an amenable number.

120002220122021 is a deficient number, since it is larger than the sum of its proper divisors (129441031).

120002220122021 is an equidigital number, since it uses as much as digits as its factorization.

120002220122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129441030.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 120002220122021 its reverse (120221022200021), we get a palindrome (240223242322042).

The spelling of 120002220122021 in words is "one hundred twenty trillion, two billion, two hundred twenty million, one hundred twenty-two thousand, twenty-one".