22012042542 has 48 divisors (see below), whose sum is σ = 51317182080. Its totient is φ = 6276200112.

The previous prime is 22012042541. The next prime is 22012042543. The reversal of 22012042542 is 24524021022.

It is an interprime number because it is at equal distance from previous prime (22012042541) and next prime (22012042543).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22012042541) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 66309 + ... + 220047.

It is an arithmetic number, because the mean of its divisors is an integer number (1069107960).

Almost surely, 2^22012042542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22012042542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25658591040).

22012042542 is an abundant number, since it is smaller than the sum of its proper divisors (29305139538).

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

22012042542 is a wasteful number, since it uses less digits than its factorization.

22012042542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154245 (or 154238 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

Adding to 22012042542 its reverse (24524021022), we get a palindrome (46536063564).

The spelling of 22012042542 in words is "twenty-two billion, twelve million, forty-two thousand, five hundred forty-two".