21222012012022 has 64 divisors (see below), whose sum is σ = 33955774470144. Its totient is φ = 9913057689600.

The previous prime is 21222012011947. The next prime is 21222012012023. The reversal of 21222012012022 is 22021021022212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222012012023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2386368208 + ... + 2386377100.

It is an arithmetic number, because the mean of its divisors is an integer number (530558976096).

Almost surely, 2^{21222012012022} is an apocalyptic number.

21222012012022 is a deficient number, since it is larger than the sum of its proper divisors (12733762458122).

21222012012022 is a wasteful number, since it uses less digits than its factorization.

21222012012022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10153.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 21222012012022 its reverse (22021021022212), we get a palindrome (43243033034234).

The spelling of 21222012012022 in words is "twenty-one trillion, two hundred twenty-two billion, twelve million, twelve thousand, twenty-two".