22222042442 has 4 divisors (see below), whose sum is σ = 33333063666. Its totient is φ = 11111021220.

The previous prime is 22222042399. The next prime is 22222042463. The reversal of 22222042442 is 24424022222.

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., 17495617441 + 4726425001 = 132271^2 + 68749^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555510609 + ... + 5555510612.

Almost surely, 2^22222042442 is an apocalyptic number.

22222042442 is a deficient number, since it is larger than the sum of its proper divisors (11111021224).

22222042442 is a wasteful number, since it uses less digits than its factorization.

22222042442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11111021223.

The product of its (nonzero) digits is 8192, while the sum is 26.

Adding to 22222042442 its reverse (24424022222), we get a palindrome (46646064664).

The spelling of 22222042442 in words is "twenty-two billion, two hundred twenty-two million, forty-two thousand, four hundred forty-two".