100311222 has 64 divisors (see below), whose sum is σ = 232243200. Its totient is φ = 28565280.

The previous prime is 100311221. The next prime is 100311223. The reversal of 100311222 is 222113001.

It is an interprime number because it is at equal distance from previous prime (100311221) and next prime (100311223).

It is a junction number, because it is equal to n+sod(n) for n = 100311198 and 100311207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100311221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 209179 + ... + 209657.

It is an arithmetic number, because the mean of its divisors is an integer number (3628800).

Almost surely, 2^100311222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100311222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116121600).

100311222 is an abundant number, since it is smaller than the sum of its proper divisors (131931978).

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

100311222 is a wasteful number, since it uses less digits than its factorization.

100311222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 100311222 is about 10015.5490114122. The cubic root of 100311222 is about 464.6399062095.

Adding to 100311222 its reverse (222113001), we get a palindrome (322424223).

The spelling of 100311222 in words is "one hundred million, three hundred eleven thousand, two hundred twenty-two".