22021012221112 has 16 divisors (see below), whose sum is σ = 41753323735200. Its totient is φ = 10886792558400.

The previous prime is 22021012221079. The next prime is 22021012221113. The reversal of 22021012221112 is 21112221012022.

It is a self number, because there is not a number n which added to its sum of digits gives 22021012221112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021012221113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15464193264 + ... + 15464194687.

It is an arithmetic number, because the mean of its divisors is an integer number (2609582733450).

Almost surely, 2^{22021012221112} is an apocalyptic number.

It is an amenable number.

22021012221112 is a deficient number, since it is larger than the sum of its proper divisors (19732311514088).

22021012221112 is a wasteful number, since it uses less digits than its factorization.

22021012221112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30928388046 (or 30928388042 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 22021012221112 its reverse (21112221012022), we get a palindrome (43133233233134).

The spelling of 22021012221112 in words is "twenty-two trillion, twenty-one billion, twelve million, two hundred twenty-one thousand, one hundred twelve".