1008890122 has 4 divisors (see below), whose sum is σ = 1513335186. Its totient is φ = 504445060.

The previous prime is 1008890107. The next prime is 1008890131. The reversal of 1008890122 is 2210988001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2210988001 = 131 ⋅16877771.

It can be written as a sum of positive squares in only one way, i.e., 706443241 + 302446881 = 26579^2 + 17391^2 .

It is a Smith number, since the sum of its digits (31) 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, 252222529 + ... + 252222532.

Almost surely, 2^1008890122 is an apocalyptic number.

1008890122 is a deficient number, since it is larger than the sum of its proper divisors (504445064).

1008890122 is an equidigital number, since it uses as much as digits as its factorization.

1008890122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504445063.

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 1008890122 is about 31763.0307433028. The cubic root of 1008890122 is about 1002.9546355310.

The spelling of 1008890122 in words is "one billion, eight million, eight hundred ninety thousand, one hundred twenty-two".