22012021221112 has 64 divisors (see below), whose sum is σ = 44664947712000. Its totient is φ = 10109778839424.

The previous prime is 22012021221101. The next prime is 22012021221143. The reversal of 22012021221112 is 21112212021022.

It is a self number, because there is not a number n which added to its sum of digits gives 22012021221112.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16856839 + ... + 18115657.

It is an arithmetic number, because the mean of its divisors is an integer number (697889808000).

Almost surely, 2^{22012021221112} is an apocalyptic number.

It is an amenable number.

22012021221112 is an abundant number, since it is smaller than the sum of its proper divisors (22652926490888).

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

22012021221112 is a wasteful number, since it uses less digits than its factorization.

22012021221112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1259660 (or 1259656 counting only the distinct ones).

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

Adding to 22012021221112 its reverse (21112212021022), we get a palindrome (43124233242134).

The spelling of 22012021221112 in words is "twenty-two trillion, twelve billion, twenty-one million, two hundred twenty-one thousand, one hundred twelve".