122122123112221 has 4 divisors (see below), whose sum is σ = 122122585395072. Its totient is φ = 122121660829372.

The previous prime is 122122123112183. The next prime is 122122123112233. The reversal of 122122123112221 is 122211321221221.

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 122122123112221 - 2³⁵ = 122087763373853 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 (122122123119221) 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, 230744941 + ... + 231273586.

It is an arithmetic number, because the mean of its divisors is an integer number (30530646348768).

Almost surely, 2^{122122123112221} is an apocalyptic number.

It is an amenable number.

122122123112221 is a deficient number, since it is larger than the sum of its proper divisors (462282851).

122122123112221 is an equidigital number, since it uses as much as digits as its factorization.

122122123112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462282850.

The product of its digits is 768, while the sum is 25.

Adding to 122122123112221 its reverse (122211321221221), we get a palindrome (244333444333442).

The spelling of 122122123112221 in words is "one hundred twenty-two trillion, one hundred twenty-two billion, one hundred twenty-three million, one hundred twelve thousand, two hundred twenty-one".