22000121022222 has 36 divisors (see below), whose sum is σ = 55449284619456. Its totient is φ = 6285748863240.

The previous prime is 22000121022203. The next prime is 22000121022239. The reversal of 22000121022222 is 22222012100022.

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 = 22000121022195 and 22000121022204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 12471723054 + ... + 12471724817.

It is an arithmetic number, because the mean of its divisors is an integer number (1540257906096).

Almost surely, 2^{22000121022222} is an apocalyptic number.

22000121022222 is an abundant number, since it is smaller than the sum of its proper divisors (33449163597234).

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

22000121022222 is a wasteful number, since it uses less digits than its factorization.

22000121022222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24943447893 (or 24943447883 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 22000121022222 its reverse (22222012100022), we get a palindrome (44222133122244).

The spelling of 22000121022222 in words is "twenty-two trillion, one hundred twenty-one million, twenty-two thousand, two hundred twenty-two".