122222221021 has 16 divisors (see below), whose sum is σ = 136844563968. Its totient is φ = 108606758400.

The previous prime is 122222221003. The next prime is 122222221057. The reversal of 122222221021 is 120122222221.

It is a cyclic number.

It is not a de Polignac number, because 122222221021 - 2⁷ = 122222220893 is a prime.

It is a super-2 number, since 2×122222221021² (a number of 23 digits) contains 22 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 122222221021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122222221001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2806695 + ... + 2849908.

It is an arithmetic number, because the mean of its divisors is an integer number (8552785248).

Almost surely, 2^122222221021 is an apocalyptic number.

It is an amenable number.

122222221021 is a deficient number, since it is larger than the sum of its proper divisors (14622342947).

122222221021 is a wasteful number, since it uses less digits than its factorization.

122222221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5656692.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 122222221021 its reverse (120122222221), we get a palindrome (242344443242).

The spelling of 122222221021 in words is "one hundred twenty-two billion, two hundred twenty-two million, two hundred twenty-one thousand, twenty-one".