121327755 has 16 divisors (see below), whose sum is σ = 194298144. Its totient is φ = 64650240.

The previous prime is 121327741. The next prime is 121327757. The reversal of 121327755 is 557723121.

It is a happy number.

It is not a de Polignac number, because 121327755 - 2⁹ = 121327243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121327757) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17787 + ... + 23643.

It is an arithmetic number, because the mean of its divisors is an integer number (12143634).

Almost surely, 2^121327755 is an apocalyptic number.

121327755 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121327755 is a deficient number, since it is larger than the sum of its proper divisors (72970389).

121327755 is a wasteful number, since it uses less digits than its factorization.

121327755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7246.

The product of its digits is 14700, while the sum is 33.

The square root of 121327755 is about 11014.8878795928. The cubic root of 121327755 is about 495.0549270749.

The spelling of 121327755 in words is "one hundred twenty-one million, three hundred twenty-seven thousand, seven hundred fifty-five".