22221212544142 has 4 divisors (see below), whose sum is σ = 33331818816216. Its totient is φ = 11110606272070.

The previous prime is 22221212544059. The next prime is 22221212544211. The reversal of 22221212544142 is 24144521212222.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 22221212544098 and 22221212544107.

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, 5555303136034 + ... + 5555303136037.

It is an arithmetic number, because the mean of its divisors is an integer number (8332954704054).

Almost surely, 2^{22221212544142} is an apocalyptic number.

22221212544142 is a deficient number, since it is larger than the sum of its proper divisors (11110606272074).

22221212544142 is a wasteful number, since it uses less digits than its factorization.

22221212544142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11110606272073.

The product of its digits is 40960, while the sum is 34.

Adding to 22221212544142 its reverse (24144521212222), we get a palindrome (46365733756364).

The spelling of 22221212544142 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred twelve million, five hundred forty-four thousand, one hundred forty-two".