1222100099 has 8 divisors (see below), whose sum is σ = 1355797440. Its totient is φ = 1092169000.

The previous prime is 1222100071. The next prime is 1222100137. The reversal of 1222100099 is 9900012221.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1222100099 - 2⁸ = 1222099843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222100039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 940877 + ... + 942174.

It is an arithmetic number, because the mean of its divisors is an integer number (169474680).

Almost surely, 2^1222100099 is an apocalyptic number.

1222100099 is a deficient number, since it is larger than the sum of its proper divisors (133697341).

1222100099 is a wasteful number, since it uses less digits than its factorization.

1222100099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1883121.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 1222100099 is about 34958.5482965183. The cubic root of 1222100099 is about 1069.1424984100.

The spelling of 1222100099 in words is "one billion, two hundred twenty-two million, one hundred thousand, ninety-nine".