22155131426 has 4 divisors (see below), whose sum is σ = 33232697142. Its totient is φ = 11077565712.

The previous prime is 22155131417. The next prime is 22155131441. The reversal of 22155131426 is 62413155122.

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

It can be written as a sum of positive squares in only one way, i.e., 20606315401 + 1548816025 = 143549^2 + 39355^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22155131392 and 22155131401.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5538782855 + ... + 5538782858.

Almost surely, 2^22155131426 is an apocalyptic number.

22155131426 is a deficient number, since it is larger than the sum of its proper divisors (11077565716).

22155131426 is a wasteful number, since it uses less digits than its factorization.

22155131426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11077565715.

The product of its digits is 14400, while the sum is 32.

Adding to 22155131426 its reverse (62413155122), we get a palindrome (84568286548).

The spelling of 22155131426 in words is "twenty-two billion, one hundred fifty-five million, one hundred thirty-one thousand, four hundred twenty-six".