22212021022212 has 192 divisors, whose sum is σ = 62436970229760. Its totient is φ = 6008624185344.

The previous prime is 22212021022063. The next prime is 22212021022273. The reversal of 22212021022212 is 21222012021222.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 251538964 + ... + 251627252.

It is an arithmetic number, because the mean of its divisors is an integer number (325192553280).

Almost surely, 2^{22212021022212} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22212021022212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31218485114880).

22212021022212 is an abundant number, since it is smaller than the sum of its proper divisors (40224949207548).

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

22212021022212 is a wasteful number, since it uses less digits than its factorization.

22212021022212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89650 (or 89648 counting only the distinct ones).

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

Adding to 22212021022212 its reverse (21222012021222), we get a palindrome (43434033043434).

The spelling of 22212021022212 in words is "twenty-two trillion, two hundred twelve billion, twenty-one million, twenty-two thousand, two hundred twelve".