121270605 has 96 divisors (see below), whose sum is σ = 229340160. Its totient is φ = 54405120.

The previous prime is 121270577. The next prime is 121270607. The reversal of 121270605 is 506072121.

It is not a de Polignac number, because 121270605 - 2⁵ = 121270573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121270607) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3911940 + ... + 3911970.

It is an arithmetic number, because the mean of its divisors is an integer number (2388960).

Almost surely, 2^121270605 is an apocalyptic number.

121270605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121270605 is a deficient number, since it is larger than the sum of its proper divisors (108069555).

121270605 is a wasteful number, since it uses less digits than its factorization.

121270605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131 (or 108 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 121270605 is about 11012.2933578796. The cubic root of 121270605 is about 494.9771849499.

It can be divided in two parts, 1212 and 70605, that added together give a palindrome (71817).

The spelling of 121270605 in words is "one hundred twenty-one million, two hundred seventy thousand, six hundred five".