121023261 has 16 divisors (see below), whose sum is σ = 183110400. Its totient is φ = 78964704.

The previous prime is 121023257. The next prime is 121023271. The reversal of 121023261 is 162320121.

It is not a de Polignac number, because 121023261 - 2² = 121023257 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121023271) 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, 46416 + ... + 48953.

It is an arithmetic number, because the mean of its divisors is an integer number (11444400).

Almost surely, 2^121023261 is an apocalyptic number.

It is an amenable number.

121023261 is a deficient number, since it is larger than the sum of its proper divisors (62087139).

121023261 is an equidigital number, since it uses as much as digits as its factorization.

121023261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95425 (or 95419 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 121023261 is about 11001.0572673721. The cubic root of 121023261 is about 494.6404367679.

Adding to 121023261 its reverse (162320121), we get a palindrome (283343382).

The spelling of 121023261 in words is "one hundred twenty-one million, twenty-three thousand, two hundred sixty-one".