220123011121 has 32 divisors (see below), whose sum is σ = 243210159360. Its totient is φ = 198003142656.

The previous prime is 220123011113. The next prime is 220123011149. The reversal of 220123011121 is 121110321022.

It is a cyclic number.

It is not a de Polignac number, because 220123011121 - 2³ = 220123011113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220123011095 and 220123011104.

It is not an unprimeable number, because it can be changed into a prime (220123011161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22527925 + ... + 22537693.

It is an arithmetic number, because the mean of its divisors is an integer number (7600317480).

Almost surely, 2^220123011121 is an apocalyptic number.

It is an amenable number.

220123011121 is a deficient number, since it is larger than the sum of its proper divisors (23087148239).

220123011121 is a wasteful number, since it uses less digits than its factorization.

220123011121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10153.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 220123011121 its reverse (121110321022), we get a palindrome (341233332143).

The spelling of 220123011121 in words is "two hundred twenty billion, one hundred twenty-three million, eleven thousand, one hundred twenty-one".