22213113012 has 36 divisors (see below), whose sum is σ = 56705761476. Its totient is φ = 7331059200.

The previous prime is 22213112969. The next prime is 22213113061. The reversal of 22213113012 is 21031131222.

It can be written as a sum of positive squares in 2 ways, for example, as 15524163216 + 6688949796 = 124596^2 + 81786^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3050973 + ... + 3058244.

It is an arithmetic number, because the mean of its divisors is an integer number (1575160041).

Almost surely, 2^22213113012 is an apocalyptic number.

It is an amenable number.

22213113012 is an abundant number, since it is smaller than the sum of its proper divisors (34492648464).

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

22213113012 is a wasteful number, since it uses less digits than its factorization.

22213113012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6109328 (or 6109323 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 22213113012 its reverse (21031131222), we get a palindrome (43244244234).

The spelling of 22213113012 in words is "twenty-two billion, two hundred thirteen million, one hundred thirteen thousand, twelve".