22221555242 has 8 divisors (see below), whose sum is σ = 33333183876. Its totient is φ = 11110493952.

The previous prime is 22221555227. The next prime is 22221555313. The reversal of 22221555242 is 24255512222.

It can be written as a sum of positive squares in 2 ways, for example, as 19934898481 + 2286656761 = 141191^2 + 47819^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 22221555199 and 22221555208.

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, 24503 + ... + 212234.

Almost surely, 2^22221555242 is an apocalyptic number.

22221555242 is a deficient number, since it is larger than the sum of its proper divisors (11111628634).

22221555242 is a wasteful number, since it uses less digits than its factorization.

22221555242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283672.

The product of its digits is 32000, while the sum is 32.

The spelling of 22221555242 in words is "twenty-two billion, two hundred twenty-one million, five hundred fifty-five thousand, two hundred forty-two".