22021100021222 has 16 divisors (see below), whose sum is σ = 33284166285744. Its totient is φ = 10926379776000.

The previous prime is 22021100021213. The next prime is 22021100021233. The reversal of 22021100021222 is 22212000112022.

It is a happy number.

It is a super-2 number, since 2×22021100021222² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22021100021222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26354822 + ... + 27177542.

It is an arithmetic number, because the mean of its divisors is an integer number (2080260392859).

Almost surely, 2^{22021100021222} is an apocalyptic number.

22021100021222 is a deficient number, since it is larger than the sum of its proper divisors (11263066264522).

22021100021222 is a wasteful number, since it uses less digits than its factorization.

22021100021222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 925015.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 22021100021222 its reverse (22212000112022), we get a palindrome (44233100133244).

The spelling of 22021100021222 in words is "twenty-two trillion, twenty-one billion, one hundred million, twenty-one thousand, two hundred twenty-two".