121541265 has 12 divisors (see below), whose sum is σ = 210671604. Its totient is φ = 64821984.

The previous prime is 121541249. The next prime is 121541281. The reversal of 121541265 is 562145121.

It is an interprime number because it is at equal distance from previous prime (121541249) and next prime (121541281).

It can be written as a sum of positive squares in 2 ways, for example, as 61214976 + 60326289 = 7824^2 + 7767^2 .

It is not a de Polignac number, because 121541265 - 2⁴ = 121541249 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1350414 + ... + 1350503.

It is an arithmetic number, because the mean of its divisors is an integer number (17555967).

Almost surely, 2^121541265 is an apocalyptic number.

121541265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121541265 is a deficient number, since it is larger than the sum of its proper divisors (89130339).

121541265 is a wasteful number, since it uses less digits than its factorization.

121541265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2700928 (or 2700925 counting only the distinct ones).

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

The square root of 121541265 is about 11024.5755020318. The cubic root of 121541265 is about 495.3451526040.

Adding to 121541265 its reverse (562145121), we get a palindrome (683686386).

The spelling of 121541265 in words is "one hundred twenty-one million, five hundred forty-one thousand, two hundred sixty-five".