21022202202222 has 32 divisors (see below), whose sum is σ = 45279502738848. Its totient is φ = 6468239425536.

The previous prime is 21022202202167. The next prime is 21022202202233. The reversal of 21022202202222 is 22220220222012.

It is a super-2 number, since 2×21022202202222² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1209198 + ... + 6595950.

It is an arithmetic number, because the mean of its divisors is an integer number (1414984460589).

Almost surely, 2^{21022202202222} is an apocalyptic number.

21022202202222 is an abundant number, since it is smaller than the sum of its proper divisors (24257300536626).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21022202202222 is a wasteful number, since it uses less digits than its factorization.

21022202202222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5436804.

The product of its (nonzero) digits is 1024, while the sum is 21.

Adding to 21022202202222 its reverse (22220220222012), we get a palindrome (43242422424234).

The spelling of 21022202202222 in words is "twenty-one trillion, twenty-two billion, two hundred two million, two hundred two thousand, two hundred twenty-two".