21202201112222 has 16 divisors (see below), whose sum is σ = 35354538828672. Its totient is φ = 9469965756960.

The previous prime is 21202201112219. The next prime is 21202201112227. The reversal of 21202201112222 is 22221110220212.

It is a junction number, because it is equal to n+sod(n) for n = 21202201112194 and 21202201112203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202201112227) 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, 13152729413 + ... + 13152731024.

It is an arithmetic number, because the mean of its divisors is an integer number (2209658676792).

Almost surely, 2^{21202201112222} is an apocalyptic number.

21202201112222 is a deficient number, since it is larger than the sum of its proper divisors (14152337716450).

21202201112222 is a wasteful number, since it uses less digits than its factorization.

21202201112222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26305460483.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 21202201112222 its reverse (22221110220212), we get a palindrome (43423311332434).

The spelling of 21202201112222 in words is "twenty-one trillion, two hundred two billion, two hundred one million, one hundred twelve thousand, two hundred twenty-two".