22220402042 has 8 divisors (see below), whose sum is σ = 33414560436. Its totient is φ = 11082215232.

The previous prime is 22220402033. The next prime is 22220402129. The reversal of 22220402042 is 24020402222.

It can be written as a sum of positive squares in 2 ways, for example, as 22212623521 + 7778521 = 149039^2 + 2789^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13991903 + ... + 13993490.

Almost surely, 2^22220402042 is an apocalyptic number.

22220402042 is a deficient number, since it is larger than the sum of its proper divisors (11194158394).

22220402042 is a wasteful number, since it uses less digits than its factorization.

22220402042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27985792.

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 22220402042 its reverse (24020402222), we get a palindrome (46240804264).

The spelling of 22220402042 in words is "twenty-two billion, two hundred twenty million, four hundred two thousand, forty-two".