122221021021 has 16 divisors (see below), whose sum is σ = 134144015040. Its totient is φ = 110435028480.

The previous prime is 122221021009. The next prime is 122221021057. The reversal of 122221021021 is 120120122221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 122221021021 - 2⁵ = 122221020989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122221020986 and 122221021004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122221021621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1437325 + ... + 1519981.

It is an arithmetic number, because the mean of its divisors is an integer number (8384000940).

Almost surely, 2^122221021021 is an apocalyptic number.

122221021021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

122221021021 is a deficient number, since it is larger than the sum of its proper divisors (11922994019).

122221021021 is a wasteful number, since it uses less digits than its factorization.

122221021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83484.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 122221021021 its reverse (120120122221), we get a palindrome (242341143242).

The spelling of 122221021021 in words is "one hundred twenty-two billion, two hundred twenty-one million, twenty-one thousand, twenty-one".