22112132021544 has 128 divisors (see below), whose sum is σ = 57303630489600. Its totient is φ = 7105477317120.

The previous prime is 22112132021543. The next prime is 22112132021549. The reversal of 22112132021544 is 44512023121122.

It is not an unprimeable number, because it can be changed into a prime (22112132021543) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 221135479 + ... + 221235449.

It is an arithmetic number, because the mean of its divisors is an integer number (447684613200).

Almost surely, 2^{22112132021544} is an apocalyptic number.

22112132021544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22112132021544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28651815244800).

22112132021544 is an abundant number, since it is smaller than the sum of its proper divisors (35191498468056).

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

22112132021544 is a wasteful number, since it uses less digits than its factorization.

22112132021544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102815 (or 102811 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

Adding to 22112132021544 its reverse (44512023121122), we get a palindrome (66624155142666).

The spelling of 22112132021544 in words is "twenty-two trillion, one hundred twelve billion, one hundred thirty-two million, twenty-one thousand, five hundred forty-four".