123122210221121 has 4 divisors (see below), whose sum is σ = 123122242892544. Its totient is φ = 123122177549700.

The previous prime is 123122210221099. The next prime is 123122210221123. The reversal of 123122210221121 is 121122012221321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123122210221121 - 2²² = 123122206026817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123122210221123) 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, 9815465 + ... + 18509126.

It is an arithmetic number, because the mean of its divisors is an integer number (30780560723136).

Almost surely, 2^{123122210221121} is an apocalyptic number.

It is an amenable number.

123122210221121 is a deficient number, since it is larger than the sum of its proper divisors (32671423).

123122210221121 is an equidigital number, since it uses as much as digits as its factorization.

123122210221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32671422.

The product of its (nonzero) digits is 384, while the sum is 23.

Adding to 123122210221121 its reverse (121122012221321), we get a palindrome (244244222442442).

The spelling of 123122210221121 in words is "one hundred twenty-three trillion, one hundred twenty-two billion, two hundred ten million, two hundred twenty-one thousand, one hundred twenty-one".