22112211021012 has 48 divisors (see below), whose sum is σ = 65517662286720. Its totient is φ = 6317774577216.

The previous prime is 22112211020989. The next prime is 22112211021013. The reversal of 22112211021012 is 21012011221122.

22112211021012 is a `hidden beast` number, since 2 + 211 + 221 + 10 + 210 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22112211021013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14624477433 + ... + 14624478944.

It is an arithmetic number, because the mean of its divisors is an integer number (1364951297640).

Almost surely, 2^{22112211021012} is an apocalyptic number.

It is an amenable number.

22112211021012 is an abundant number, since it is smaller than the sum of its proper divisors (43405451265708).

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

22112211021012 is a wasteful number, since it uses less digits than its factorization.

22112211021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29248956397 (or 29248956389 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 22112211021012 its reverse (21012011221122), we get a palindrome (43124222242134).

The spelling of 22112211021012 in words is "twenty-two trillion, one hundred twelve billion, two hundred eleven million, twenty-one thousand, twelve".