121266761 has 32 divisors (see below), whose sum is σ = 157925376. Its totient is φ = 90360000.

The previous prime is 121266749. The next prime is 121266767. The reversal of 121266761 is 167662121.

It is a cyclic number.

It is not a de Polignac number, because 121266761 - 2⁶ = 121266697 is a prime.

It is a super-2 number, since 2×121266761² = 29411254646862242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121266767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 240836 + ... + 241338.

It is an arithmetic number, because the mean of its divisors is an integer number (4935168).

Almost surely, 2^121266761 is an apocalyptic number.

121266761 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121266761 is a deficient number, since it is larger than the sum of its proper divisors (36658615).

121266761 is a wasteful number, since it uses less digits than its factorization.

121266761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653.

The product of its digits is 6048, while the sum is 32.

The square root of 121266761 is about 11012.1188242772. The cubic root of 121266761 is about 494.9719550142.

The spelling of 121266761 in words is "one hundred twenty-one million, two hundred sixty-six thousand, seven hundred sixty-one".