122122312221 has 128 divisors (see below), whose sum is σ = 212546138112. Its totient is φ = 60652800000.

The previous prime is 122122312219. The next prime is 122122312231. The reversal of 122122312221 is 122213221221.

It is not a de Polignac number, because 122122312221 - 2¹ = 122122312219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122122312211) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 54251346 + ... + 54253596.

It is an arithmetic number, because the mean of its divisors is an integer number (1660516704).

Almost surely, 2^122122312221 is an apocalyptic number.

It is an amenable number.

122122312221 is a deficient number, since it is larger than the sum of its proper divisors (90423825891).

122122312221 is a wasteful number, since it uses less digits than its factorization.

122122312221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2483.

The product of its digits is 384, while the sum is 21.

Adding to 122122312221 its reverse (122213221221), we get a palindrome (244335533442).

The spelling of 122122312221 in words is "one hundred twenty-two billion, one hundred twenty-two million, three hundred twelve thousand, two hundred twenty-one".