220120122022121 has 4 divisors (see below), whose sum is σ = 221237483047812. Its totient is φ = 219002760996432.

The previous prime is 220120122022117. The next prime is 220120122022123. The reversal of 220120122022121 is 121220221021022.

220120122022121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 213201933262096 + 6918188760025 = 14601436^2 + 2630245^2 .

It is a cyclic number.

It is not a de Polignac number, because 220120122022121 - 2² = 220120122022117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220120122022093 and 220120122022102.

It is not an unprimeable number, because it can be changed into a prime (220120122022123) 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, 558680512550 + ... + 558680512943.

It is an arithmetic number, because the mean of its divisors is an integer number (55309370761953).

Almost surely, 2^{220120122022121} is an apocalyptic number.

It is an amenable number.

220120122022121 is a deficient number, since it is larger than the sum of its proper divisors (1117361025691).

220120122022121 is a wasteful number, since it uses less digits than its factorization.

220120122022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1117361025690.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 220120122022121 its reverse (121220221021022), we get a palindrome (341340343043143).

The spelling of 220120122022121 in words is "two hundred twenty trillion, one hundred twenty billion, one hundred twenty-two million, twenty-two thousand, one hundred twenty-one".