222226913578 has 4 divisors (see below), whose sum is σ = 333340370370. Its totient is φ = 111113456788.

The previous prime is 222226913561. The next prime is 222226913581. The reversal of 222226913578 is 875319622222.

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., 210843517329 + 11383396249 = 459177^2 + 106693^2 .

It is a super-2 number, since 2×222226913578² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55556728393 + ... + 55556728396.

Almost surely, 2^222226913578 is an apocalyptic number.

222226913578 is a deficient number, since it is larger than the sum of its proper divisors (111113456792).

222226913578 is a wasteful number, since it uses less digits than its factorization.

222226913578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111113456791.

The product of its digits is 1451520, while the sum is 49.

The spelling of 222226913578 in words is "two hundred twenty-two billion, two hundred twenty-six million, nine hundred thirteen thousand, five hundred seventy-eight".