121455135 has 24 divisors (see below), whose sum is σ = 211380624. Its totient is φ = 64512000.

The previous prime is 121455133. The next prime is 121455149. The reversal of 121455135 is 531554121.

121455135 is a `hidden beast` number, since 1 + 2 + 145 + 513 + 5 = 666.

It is not a de Polignac number, because 121455135 - 2¹ = 121455133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121455099 and 121455108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121455133) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5919 + ... + 16671.

It is an arithmetic number, because the mean of its divisors is an integer number (8807526).

Almost surely, 2^121455135 is an apocalyptic number.

121455135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121455135 is a deficient number, since it is larger than the sum of its proper divisors (89925489).

121455135 is a wasteful number, since it uses less digits than its factorization.

121455135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11015 (or 11012 counting only the distinct ones).

The product of its digits is 3000, while the sum is 27.

The square root of 121455135 is about 11020.6685368901. The cubic root of 121455135 is about 495.2281164684.

The spelling of 121455135 in words is "one hundred twenty-one million, four hundred fifty-five thousand, one hundred thirty-five".