22102021222 has 16 divisors (see below), whose sum is σ = 33921292752. Its totient is φ = 10797753600.

The previous prime is 22102021217. The next prime is 22102021223. The reversal of 22102021222 is 22212020122.

It is a junction number, because it is equal to n+sod(n) for n = 22102021196 and 22102021205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22102021223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 691779 + ... + 723022.

It is an arithmetic number, because the mean of its divisors is an integer number (2120080797).

Almost surely, 2^22102021222 is an apocalyptic number.

22102021222 is a deficient number, since it is larger than the sum of its proper divisors (11819271530).

22102021222 is a wasteful number, since it uses less digits than its factorization.

22102021222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1414983.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 22102021222 its reverse (22212020122), we get a palindrome (44314041344).

It can be divided in two parts, 221020 and 21222, that added together give a palindrome (242242).

The spelling of 22102021222 in words is "twenty-two billion, one hundred two million, twenty-one thousand, two hundred twenty-two".