122221404122221 has 4 divisors (see below), whose sum is σ = 122971228687552. Its totient is φ = 121471579556892.

The previous prime is 122221404122219. The next prime is 122221404122287.

It is a happy number.

122221404122221 is nontrivially palindromic in base 10.

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 122221404122221 - 2¹ = 122221404122219 is a prime.

It is a super-3 number, since 3×122221404122221³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122221404122221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122221404126221) 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, 374912282421 + ... + 374912282746.

It is an arithmetic number, because the mean of its divisors is an integer number (30742807171888).

Almost surely, 2^{122221404122221} is an apocalyptic number.

It is an amenable number.

122221404122221 is a deficient number, since it is larger than the sum of its proper divisors (749824565331).

122221404122221 is an equidigital number, since it uses as much as digits as its factorization.

122221404122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 749824565330.

The product of its (nonzero) digits is 4096, while the sum is 28.

It can be divided in two parts, 12222140 and 4122221, that added together give a palindrome (16344361).

The spelling of 122221404122221 in words is "one hundred twenty-two trillion, two hundred twenty-one billion, four hundred four million, one hundred twenty-two thousand, two hundred twenty-one".