22431211211442 has 32 divisors (see below), whose sum is σ = 48941032887360. Its totient is φ = 6797307782720.

The previous prime is 22431211211419. The next prime is 22431211211443. The reversal of 22431211211442 is 24411211213422.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (22431211211443) 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 15 ways as a sum of consecutive naturals, for example, 18886684 + ... + 20039192.

It is an arithmetic number, because the mean of its divisors is an integer number (1529407277730).

Almost surely, 2^{22431211211442} is an apocalyptic number.

22431211211442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22431211211442 is an abundant number, since it is smaller than the sum of its proper divisors (26509821675918).

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

22431211211442 is a wasteful number, since it uses less digits than its factorization.

22431211211442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1447418.

The product of its digits is 6144, while the sum is 30.

Adding to 22431211211442 its reverse (24411211213422), we get a palindrome (46842422424864).

The spelling of 22431211211442 in words is "twenty-two trillion, four hundred thirty-one billion, two hundred eleven million, two hundred eleven thousand, four hundred forty-two".