22201100122122 has 16 divisors (see below), whose sum is σ = 49335778049280. Its totient is φ = 7400366707356.

The previous prime is 22201100122027. The next prime is 22201100122127. The reversal of 22201100122122 is 22122100110222.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 22201100122095 and 22201100122104.

It is not an unprimeable number, because it can be changed into a prime (22201100122127) 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 7 ways as a sum of consecutive naturals, for example, 205565741818 + ... + 205565741925.

It is an arithmetic number, because the mean of its divisors is an integer number (3083486128080).

Almost surely, 2^{22201100122122} is an apocalyptic number.

22201100122122 is an abundant number, since it is smaller than the sum of its proper divisors (27134677927158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22201100122122 is a wasteful number, since it uses less digits than its factorization.

22201100122122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411131483754 (or 411131483748 counting only the distinct ones).

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

Adding to 22201100122122 its reverse (22122100110222), we get a palindrome (44323200232344).

The spelling of 22201100122122 in words is "twenty-two trillion, two hundred one billion, one hundred million, one hundred twenty-two thousand, one hundred twenty-two".