121112340 has 48 divisors (see below), whose sum is σ = 339873408. Its totient is φ = 32224384.

The previous prime is 121112333. The next prime is 121112351. The reversal of 121112340 is 43211121.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a nialpdrome in base 15.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 28174 + ... + 32186.

It is an arithmetic number, because the mean of its divisors is an integer number (7080696).

Almost surely, 2^121112340 is an apocalyptic number.

121112340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121112340 is an abundant number, since it is smaller than the sum of its proper divisors (218761068).

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

121112340 is a wasteful number, since it uses less digits than its factorization.

121112340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4528 (or 4526 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 121112340 is about 11005.1051789613. The cubic root of 121112340 is about 494.7617668024.

Adding to 121112340 its reverse (43211121), we get a palindrome (164323461).

The spelling of 121112340 in words is "one hundred twenty-one million, one hundred twelve thousand, three hundred forty".