122221222103221 has 4 divisors (see below), whose sum is σ = 122221302910092. Its totient is φ = 122221141296352.

The previous prime is 122221222103209. The next prime is 122221222103231. The reversal of 122221222103221 is 122301222122221.

It is a happy number.

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 43289636024196 + 78931586079025 = 6579486^2 + 8884345^2 .

It is a cyclic number.

It is not a de Polignac number, because 122221222103221 - 2³⁷ = 122083783149749 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 (122221222103231) 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, 38090536 + ... + 41174401.

It is an arithmetic number, because the mean of its divisors is an integer number (30555325727523).

Almost surely, 2^{122221222103221} is an apocalyptic number.

It is an amenable number.

122221222103221 is a deficient number, since it is larger than the sum of its proper divisors (80806871).

122221222103221 is an equidigital number, since it uses as much as digits as its factorization.

122221222103221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80806870.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 122221222103221 its reverse (122301222122221), we get a palindrome (244522444225442).

The spelling of 122221222103221 in words is "one hundred twenty-two trillion, two hundred twenty-one billion, two hundred twenty-two million, one hundred three thousand, two hundred twenty-one".