122012122221 has 24 divisors (see below), whose sum is σ = 192412047360. Its totient is φ = 73888848000.

The previous prime is 122012122213. The next prime is 122012122249. The reversal of 122012122221 is 122221210221.

It is a happy number.

It is not a de Polignac number, because 122012122221 - 2³ = 122012122213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122012122194 and 122012122203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122012122721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 355180 + ... + 608421.

It is an arithmetic number, because the mean of its divisors is an integer number (8017168640).

Almost surely, 2^122012122221 is an apocalyptic number.

122012122221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

122012122221 is a deficient number, since it is larger than the sum of its proper divisors (70399925139).

122012122221 is a wasteful number, since it uses less digits than its factorization.

122012122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964897 (or 964894 counting only the distinct ones).

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

Adding to 122012122221 its reverse (122221210221), we get a palindrome (244233332442).

The spelling of 122012122221 in words is "one hundred twenty-two billion, twelve million, one hundred twenty-two thousand, two hundred twenty-one".