122899999 has 8 divisors (see below), whose sum is σ = 133830000. Its totient is φ = 112416192.

The previous prime is 122899991. The next prime is 122900033. The reversal of 122899999 is 999998221.

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 122899999 - 2³ = 122899991 is a prime.

It is a Duffinian number.

122899999 is a modest number, since divided by 99999 gives 1228 as remainder.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122899991) 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, 110974 + ... + 112075.

It is an arithmetic number, because the mean of its divisors is an integer number (16728750).

Almost surely, 2^122899999 is an apocalyptic number.

122899999 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

122899999 is a deficient number, since it is larger than the sum of its proper divisors (10930001).

122899999 is a wasteful number, since it uses less digits than its factorization.

122899999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223097.

The product of its digits is 1889568, while the sum is 58.

The square root of 122899999 is about 11086.0271964306. The cubic root of 122899999 is about 497.1841706453.

The spelling of 122899999 in words is "one hundred twenty-two million, eight hundred ninety-nine thousand, nine hundred ninety-nine".