1222999108 has 12 divisors (see below), whose sum is σ = 2266145532. Its totient is φ = 575528960.

The previous prime is 1222999067. The next prime is 1222999109. The reversal of 1222999108 is 8019992221.

It can be written as a sum of positive squares in 2 ways, for example, as 851589124 + 371409984 = 29182^2 + 19272^2 .

It is not an unprimeable number, because it can be changed into a prime (1222999109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8992573 + ... + 8992708.

It is an arithmetic number, because the mean of its divisors is an integer number (188845461).

Almost surely, 2^1222999108 is an apocalyptic number.

It is an amenable number.

1222999108 is a deficient number, since it is larger than the sum of its proper divisors (1043146424).

1222999108 is a wasteful number, since it uses less digits than its factorization.

1222999108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17985302 (or 17985300 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 43.

The square root of 1222999108 is about 34971.4041468169. The cubic root of 1222999108 is about 1069.4045972725.

The spelling of 1222999108 in words is "one billion, two hundred twenty-two million, nine hundred ninety-nine thousand, one hundred eight".