22042251142 has 4 divisors (see below), whose sum is σ = 33063376716. Its totient is φ = 11021125570.

The previous prime is 22042251137. The next prime is 22042251163. The reversal of 22042251142 is 24115224022.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24115224022 = 2 ⋅12057612011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5510562784 + ... + 5510562787.

It is an arithmetic number, because the mean of its divisors is an integer number (8265844179).

Almost surely, 2^22042251142 is an apocalyptic number.

22042251142 is a deficient number, since it is larger than the sum of its proper divisors (11021125574).

22042251142 is a wasteful number, since it uses less digits than its factorization.

22042251142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11021125573.

The product of its (nonzero) digits is 2560, while the sum is 25.

Adding to 22042251142 its reverse (24115224022), we get a palindrome (46157475164).

The spelling of 22042251142 in words is "twenty-two billion, forty-two million, two hundred fifty-one thousand, one hundred forty-two".