121313112 has 16 divisors (see below), whose sum is σ = 303282840. Its totient is φ = 40437696.

The previous prime is 121313107. The next prime is 121313117. The reversal of 121313112 is 211313121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (121313107) and next prime (121313117).

It is a super-2 number, since 2×121313112² = 29433742286249088, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 121313091 and 121313100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121313117) 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, 2527333 + ... + 2527380.

Almost surely, 2^121313112 is an apocalyptic number.

121313112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121313112 is an abundant number, since it is smaller than the sum of its proper divisors (181969728).

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

121313112 is a wasteful number, since it uses less digits than its factorization.

121313112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5054722 (or 5054718 counting only the distinct ones).

The product of its digits is 36, while the sum is 15.

The square root of 121313112 is about 11014.2231682493. The cubic root of 121313112 is about 495.0350102775.

Adding to 121313112 its reverse (211313121), we get a palindrome (332626233).

Subtracting 121313112 from its reverse (211313121), we obtain a palindrome (90000009).

The spelling of 121313112 in words is "one hundred twenty-one million, three hundred thirteen thousand, one hundred twelve".