21222052413422 has 12 divisors (see below), whose sum is σ = 37030315946040. Its totient is φ = 9095165319996.

The previous prime is 21222052413421. The next prime is 21222052413433. The reversal of 21222052413422 is 22431425022212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222052413421) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 108275777522 + ... + 108275777717.

It is an arithmetic number, because the mean of its divisors is an integer number (3085859662170).

Almost surely, 2^{21222052413422} is an apocalyptic number.

21222052413422 is a deficient number, since it is larger than the sum of its proper divisors (15808263532618).

21222052413422 is a wasteful number, since it uses less digits than its factorization.

21222052413422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216551555255 (or 216551555248 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 32.

Adding to 21222052413422 its reverse (22431425022212), we get a palindrome (43653477435634).

The spelling of 21222052413422 in words is "twenty-one trillion, two hundred twenty-two billion, fifty-two million, four hundred thirteen thousand, four hundred twenty-two".