21022000000222 has 16 divisors (see below), whose sum is σ = 33967498259520. Its totient is φ = 9699923574432.

The previous prime is 21022000000213. The next prime is 21022000000223. The reversal of 21022000000222 is 22200000022012.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21022000000223) 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, 105647197 + ... + 105845992.

It is an arithmetic number, because the mean of its divisors is an integer number (2122968641220).

Almost surely, 2^{21022000000222} is an apocalyptic number.

21022000000222 is a deficient number, since it is larger than the sum of its proper divisors (12945498259298).

21022000000222 is a wasteful number, since it uses less digits than its factorization.

21022000000222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211497027.

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 21022000000222 its reverse (22200000022012), we get a palindrome (43222000022234).

The spelling of 21022000000222 in words is "twenty-one trillion, twenty-two billion, two hundred twenty-two", and thus it is an aban number.