122499216 has 180 divisors, whose sum is σ = 414213072. Its totient is φ = 34945344.

The previous prime is 122499149. The next prime is 122499233. The reversal of 122499216 is 612994221.

It is a super-2 number, since 2×122499216² = 30012115841229312, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 190191 + ... + 190833.

Almost surely, 2^122499216 is an apocalyptic number.

122499216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122499216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207106536).

122499216 is an abundant number, since it is smaller than the sum of its proper divisors (291713856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122499216 is an equidigital number, since it uses as much as digits as its factorization.

122499216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680 (or 655 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 122499216 is about 11067.9363930229. The cubic root of 122499216 is about 496.6431346798.

The spelling of 122499216 in words is "one hundred twenty-two million, four hundred ninety-nine thousand, two hundred sixteen".