122200012222021 has 6 divisors (see below), whose sum is σ = 124855331638790. Its totient is φ = 119600011959816.

The previous prime is 122200012221983. The next prime is 122200012222031. The reversal of 122200012222021 is 120222210002221.

It can be written as a sum of positive squares in only one way, i.e., 70041081593025 + 52158930628996 = 8369055^2 + 7222114^2 .

It is not a de Polignac number, because 122200012222021 - 2³⁵ = 122165652483653 is a prime.

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 122200012222021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122200012222031) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27659575026 + ... + 27659579443.

Almost surely, 2^{122200012222021} is an apocalyptic number.

It is an amenable number.

122200012222021 is a deficient number, since it is larger than the sum of its proper divisors (2655319416769).

122200012222021 is an frugal number, since it uses more digits than its factorization.

122200012222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55319154563 (or 55319154516 counting only the distinct ones).

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

Adding to 122200012222021 its reverse (120222210002221), we get a palindrome (242422222224242).

The spelling of 122200012222021 in words is "one hundred twenty-two trillion, two hundred billion, twelve million, two hundred twenty-two thousand, twenty-one".