121261347 has 8 divisors (see below), whose sum is σ = 179646480. Its totient is φ = 80840880.

The previous prime is 121261337. The next prime is 121261373. The reversal of 121261347 is 743162121.

121261347 is a `hidden beast` number, since 1 + 2 + 1 + 2 + 613 + 47 = 666.

It is not a de Polignac number, because 121261347 - 2⁷ = 121261219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 4491161 = 121261347 / (1 + 2 + 1 + 2 + 6 + 1 + 3 + 4 + 7).

It is a self number, because there is not a number n which added to its sum of digits gives 121261347.

It is not an unprimeable number, because it can be changed into a prime (121261337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2245554 + ... + 2245607.

It is an arithmetic number, because the mean of its divisors is an integer number (22455810).

Almost surely, 2^121261347 is an apocalyptic number.

121261347 is a deficient number, since it is larger than the sum of its proper divisors (58385133).

121261347 is an equidigital number, since it uses as much as digits as its factorization.

121261347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4491170 (or 4491164 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 121261347 is about 11011.8730014471. The cubic root of 121261347 is about 494.9645888351.

The spelling of 121261347 in words is "one hundred twenty-one million, two hundred sixty-one thousand, three hundred forty-seven".