122221022021 has 16 divisors (see below), whose sum is σ = 139924487808. Its totient is φ = 104578516800.

The previous prime is 122221021999. The next prime is 122221022041. The reversal of 122221022021 is 120220122221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 122221022021 - 2¹⁴ = 122221005637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122221022041) 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, 18020651 + ... + 18027431.

It is an arithmetic number, because the mean of its divisors is an integer number (8745280488).

Almost surely, 2^122221022021 is an apocalyptic number.

It is an amenable number.

122221022021 is a deficient number, since it is larger than the sum of its proper divisors (17703465787).

122221022021 is an equidigital number, since it uses as much as digits as its factorization.

122221022021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10892.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 122221022021 its reverse (120220122221), we get a palindrome (242441144242).

The spelling of 122221022021 in words is "one hundred twenty-two billion, two hundred twenty-one million, twenty-two thousand, twenty-one".