22111011202212 has 72 divisors (see below), whose sum is σ = 56017329546360. Its totient is φ = 7353786216960.

The previous prime is 22111011202211. The next prime is 22111011202253. The reversal of 22111011202212 is 21220211011122.

22111011202212 is a `hidden beast` number, since 221 + 1 + 101 + 120 + 221 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 186085253376 + 21924925948836 = 431376^2 + 4682406^2 .

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

It is not an unprimeable number, because it can be changed into a prime (22111011202211) 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 23 ways as a sum of consecutive naturals, for example, 41790762 + ... + 42316542.

Almost surely, 2^{22111011202212} is an apocalyptic number.

It is an amenable number.

22111011202212 is an abundant number, since it is smaller than the sum of its proper divisors (33906318344148).

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

22111011202212 is a wasteful number, since it uses less digits than its factorization.

22111011202212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528413 (or 528408 counting only the distinct ones).

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

Adding to 22111011202212 its reverse (21220211011122), we get a palindrome (43331222213334).

The spelling of 22111011202212 in words is "twenty-two trillion, one hundred eleven billion, eleven million, two hundred two thousand, two hundred twelve".