121847013 has 6 divisors (see below), whose sum is σ = 176001254. Its totient is φ = 81231336.

The previous prime is 121847003. The next prime is 121847021. The reversal of 121847013 is 310748121.

It can be written as a sum of positive squares in only one way, i.e., 115283169 + 6563844 = 10737^2 + 2562^2 .

It is not a de Polignac number, because 121847013 - 2⁴ = 121846997 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 (121847003) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6769270 + ... + 6769287.

Almost surely, 2^121847013 is an apocalyptic number.

It is an amenable number.

121847013 is a deficient number, since it is larger than the sum of its proper divisors (54154241).

121847013 is a wasteful number, since it uses less digits than its factorization.

121847013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13538563 (or 13538560 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 121847013 is about 11038.4334486375. The cubic root of 121847013 is about 495.7601665799.

The spelling of 121847013 in words is "one hundred twenty-one million, eight hundred forty-seven thousand, thirteen".