22131211442 has 16 divisors (see below), whose sum is σ = 33280994880. Its totient is φ = 11037569328.

The previous prime is 22131211411. The next prime is 22131211483. The reversal of 22131211442 is 24411213122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2712413 + ... + 2720559.

It is an arithmetic number, because the mean of its divisors is an integer number (2080062180).

Almost surely, 2^22131211442 is an apocalyptic number.

22131211442 is a deficient number, since it is larger than the sum of its proper divisors (11149783438).

22131211442 is a wasteful number, since it uses less digits than its factorization.

22131211442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11425.

The product of its digits is 768, while the sum is 23.

Adding to 22131211442 its reverse (24411213122), we get a palindrome (46542424564).

The spelling of 22131211442 in words is "twenty-two billion, one hundred thirty-one million, two hundred eleven thousand, four hundred forty-two".