122221112132221 has 4 divisors (see below), whose sum is σ = 122226727126752. Its totient is φ = 122215497137692.

The previous prime is 122221112132209. The next prime is 122221112132243. The reversal of 122221112132221 is 122231211122221.

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 a de Polignac number, because none of the positive numbers 2^k-122221112132221 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 (122221112532221) 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, 2807464615 + ... + 2807508148.

It is an arithmetic number, because the mean of its divisors is an integer number (30556681781688).

Almost surely, 2^{122221112132221} is an apocalyptic number.

It is an amenable number.

122221112132221 is a deficient number, since it is larger than the sum of its proper divisors (5614994531).

122221112132221 is an equidigital number, since it uses as much as digits as its factorization.

122221112132221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5614994530.

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

Adding to 122221112132221 its reverse (122231211122221), we get a palindrome (244452323254442).

The spelling of 122221112132221 in words is "one hundred twenty-two trillion, two hundred twenty-one billion, one hundred twelve million, one hundred thirty-two thousand, two hundred twenty-one".