22111212012150 has 48 divisors (see below), whose sum is σ = 54851293073808. Its totient is φ = 5894657904000.

The previous prime is 22111212012047. The next prime is 22111212012151. The reversal of 22111212012150 is 5121021211122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22111212012151) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20283321 + ... + 21345620.

It is an arithmetic number, because the mean of its divisors is an integer number (1142735272371).

Almost surely, 2^{22111212012150} is an apocalyptic number.

22111212012150 is an abundant number, since it is smaller than the sum of its proper divisors (32740081061658).

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

22111212012150 is a wasteful number, since it uses less digits than its factorization.

22111212012150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41632497 (or 41632492 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 21.

Adding to 22111212012150 its reverse (5121021211122), we get a palindrome (27232233223272).

The spelling of 22111212012150 in words is "twenty-two trillion, one hundred eleven billion, two hundred twelve million, twelve thousand, one hundred fifty".