21222202200122 has 64 divisors (see below), whose sum is σ = 40184110568448. Its totient is φ = 8165178864000.

The previous prime is 21222202200091. The next prime is 21222202200179. The reversal of 21222202200122 is 22100220222212.

It is a junction number, because it is equal to n+sod(n) for n = 21222202200094 and 21222202200103.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28791797 + ... + 29519687.

It is an arithmetic number, because the mean of its divisors is an integer number (627876727632).

Almost surely, 2^{21222202200122} is an apocalyptic number.

21222202200122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21222202200122 is a deficient number, since it is larger than the sum of its proper divisors (18961908368326).

21222202200122 is a wasteful number, since it uses less digits than its factorization.

21222202200122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730275.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 21222202200122 its reverse (22100220222212), we get a palindrome (43322422422334).

The spelling of 21222202200122 in words is "twenty-one trillion, two hundred twenty-two billion, two hundred two million, two hundred thousand, one hundred twenty-two".