22121012020222 has 96 divisors (see below), whose sum is σ = 37377695669760. Its totient is φ = 9772954963200.

The previous prime is 22121012020171. The next prime is 22121012020277. The reversal of 22121012020222 is 22202021012122.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 22121012020222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3956536647 + ... + 3956542237.

It is an arithmetic number, because the mean of its divisors is an integer number (389350996560).

Almost surely, 2^{22121012020222} is an apocalyptic number.

22121012020222 is a deficient number, since it is larger than the sum of its proper divisors (15256683649538).

22121012020222 is a wasteful number, since it uses less digits than its factorization.

22121012020222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8410 (or 8369 counting only the distinct ones).

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

Adding to 22121012020222 its reverse (22202021012122), we get a palindrome (44323033032344).

The spelling of 22121012020222 in words is "twenty-two trillion, one hundred twenty-one billion, twelve million, twenty thousand, two hundred twenty-two".