121755271 has 16 divisors (see below), whose sum is σ = 137013408. Its totient is φ = 107222400.

The previous prime is 121755269. The next prime is 121755301. The reversal of 121755271 is 172557121.

It is a cyclic number.

It is not a de Polignac number, because 121755271 - 2¹ = 121755269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121755671) 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, 118741 + ... + 119761.

It is an arithmetic number, because the mean of its divisors is an integer number (8563338).

Almost surely, 2^121755271 is an apocalyptic number.

121755271 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121755271 is a deficient number, since it is larger than the sum of its proper divisors (15258137).

121755271 is a wasteful number, since it uses less digits than its factorization.

121755271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1362.

The product of its digits is 4900, while the sum is 31.

The square root of 121755271 is about 11034.2770945812. The cubic root of 121755271 is about 495.6357114735.

The spelling of 121755271 in words is "one hundred twenty-one million, seven hundred fifty-five thousand, two hundred seventy-one".