122102122221 has 8 divisors (see below), whose sum is σ = 180892032960. Its totient is φ = 81401414796.

The previous prime is 122102122211. The next prime is 122102122249. The reversal of 122102122221 is 122221201221.

It is a happy number.

It is not a de Polignac number, because 122102122221 - 2²⁶ = 122035013357 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 122102122194 and 122102122203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122102122201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2261150385 + ... + 2261150438.

It is an arithmetic number, because the mean of its divisors is an integer number (22611504120).

Almost surely, 2^122102122221 is an apocalyptic number.

It is an amenable number.

122102122221 is a deficient number, since it is larger than the sum of its proper divisors (58789910739).

122102122221 is an equidigital number, since it uses as much as digits as its factorization.

122102122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4522300832 (or 4522300826 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 122102122221 its reverse (122221201221), we get a palindrome (244323323442).

The spelling of 122102122221 in words is "one hundred twenty-two billion, one hundred two million, one hundred twenty-two thousand, two hundred twenty-one".