121412655 has 64 divisors (see below), whose sum is σ = 265681920. Its totient is φ = 51228288.

The previous prime is 121412617. The next prime is 121412659. The reversal of 121412655 is 556214121.

121412655 is a `hidden beast` number, since 1 + 2 + 1 + 4 + 1 + 2 + 655 = 666.

It is not a de Polignac number, because 121412655 - 2⁶ = 121412591 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121412659) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7344 + ... + 17226.

It is an arithmetic number, because the mean of its divisors is an integer number (4151280).

Almost surely, 2^121412655 is an apocalyptic number.

121412655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121412655 is an abundant number, since it is smaller than the sum of its proper divisors (144269265).

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

121412655 is a wasteful number, since it uses less digits than its factorization.

121412655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9917 (or 9911 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 121412655 is about 11018.7410805409. The cubic root of 121412655 is about 495.1703729416.

Adding to 121412655 its reverse (556214121), we get a palindrome (677626776).

The spelling of 121412655 in words is "one hundred twenty-one million, four hundred twelve thousand, six hundred fifty-five".