22221211100022 has 96 divisors (see below), whose sum is σ = 52588602147744. Its totient is φ = 6725275660800.

The previous prime is 22221211099991. The next prime is 22221211100029. The reversal of 22221211100022 is 22000111212222.

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 = 22221211099968 and 22221211100004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22221211100029) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 962737522 + ... + 962760602.

It is an arithmetic number, because the mean of its divisors is an integer number (547797939039).

Almost surely, 2^{22221211100022} is an apocalyptic number.

22221211100022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22221211100022 is an abundant number, since it is smaller than the sum of its proper divisors (30367391047722).

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

22221211100022 is a wasteful number, since it uses less digits than its factorization.

22221211100022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28974 (or 28971 counting only the distinct ones).

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

Adding to 22221211100022 its reverse (22000111212222), we get a palindrome (44221322312244).

The spelling of 22221211100022 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred eleven million, one hundred thousand, twenty-two".