121143612 has 24 divisors (see below), whose sum is σ = 283726800. Its totient is φ = 40230016.

The previous prime is 121143611. The next prime is 121143613. The reversal of 121143612 is 216341121.

It is an interprime number because it is at equal distance from previous prime (121143611) and next prime (121143613).

It is a super-3 number, since 3×121143612³ (a number of 25 digits) contains 333 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121143611) 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, 15537 + ... + 21992.

It is an arithmetic number, because the mean of its divisors is an integer number (11821950).

Almost surely, 2^121143612 is an apocalyptic number.

121143612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121143612 is an abundant number, since it is smaller than the sum of its proper divisors (162583188).

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

121143612 is a wasteful number, since it uses less digits than its factorization.

121143612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37805 (or 37803 counting only the distinct ones).

The product of its digits is 288, while the sum is 21.

The square root of 121143612 is about 11006.5258824027. The cubic root of 121143612 is about 494.8043467148.

Adding to 121143612 its reverse (216341121), we get a palindrome (337484733).

The spelling of 121143612 in words is "one hundred twenty-one million, one hundred forty-three thousand, six hundred twelve".