22231152444442 has 32 divisors (see below), whose sum is σ = 34109237816640. Its totient is φ = 10864439251200.

The previous prime is 22231152444383. The next prime is 22231152444443. The reversal of 22231152444442 is 24444425113222.

It is a junction number, because it is equal to n+sod(n) for n = 22231152444395 and 22231152444404.

It is not an unprimeable number, because it can be changed into a prime (22231152444443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20994034 + ... + 22027522.

It is an arithmetic number, because the mean of its divisors is an integer number (1065913681770).

Almost surely, 2^{22231152444442} is an apocalyptic number.

22231152444442 is a deficient number, since it is larger than the sum of its proper divisors (11878085372198).

22231152444442 is a wasteful number, since it uses less digits than its factorization.

22231152444442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034958.

The product of its digits is 491520, while the sum is 40.

Adding to 22231152444442 its reverse (24444425113222), we get a palindrome (46675577557664).

The spelling of 22231152444442 in words is "twenty-two trillion, two hundred thirty-one billion, one hundred fifty-two million, four hundred forty-four thousand, four hundred forty-two".