22121022022212 has 48 divisors (see below), whose sum is σ = 52681701264192. Its totient is φ = 7221878002560.

The previous prime is 22121022022181. The next prime is 22121022022243. The reversal of 22121022022212 is 21222022012122.

It is an interprime number because it is at equal distance from previous prime (22121022022181) and next prime (22121022022243).

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, 30093483 + ... + 30819794.

It is an arithmetic number, because the mean of its divisors is an integer number (1097535443004).

Almost surely, 2^{22121022022212} is an apocalyptic number.

It is an amenable number.

22121022022212 is an abundant number, since it is smaller than the sum of its proper divisors (30560679241980).

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

22121022022212 is a wasteful number, since it uses less digits than its factorization.

22121022022212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60913908 (or 60913906 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 22121022022212 its reverse (21222022012122), we get a palindrome (43343044034334).

The spelling of 22121022022212 in words is "twenty-two trillion, one hundred twenty-one billion, twenty-two million, twenty-two thousand, two hundred twelve".