247130121 has 8 divisors (see below), whose sum is σ = 376579264. Its totient is φ = 141217200.

The previous prime is 247130113. The next prime is 247130129. The reversal of 247130121 is 121031742.

247130121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (247130113) and next prime (247130129).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 247130121 - 2³ = 247130113 is a prime.

It is a super-2 number, since 2×247130121² = 122146593410949282, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 11768101 = 247130121 / (2 + 4 + 7 + 1 + 3 + 0 + 1 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (247130129) 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, 5884030 + ... + 5884071.

It is an arithmetic number, because the mean of its divisors is an integer number (47072408).

Almost surely, 2^247130121 is an apocalyptic number.

247130121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

247130121 is a deficient number, since it is larger than the sum of its proper divisors (129449143).

247130121 is a wasteful number, since it uses less digits than its factorization.

247130121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11768111.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 247130121 is about 15720.3728009230. The cubic root of 247130121 is about 627.5406943868.

Adding to 247130121 its reverse (121031742), we get a palindrome (368161863).

The spelling of 247130121 in words is "two hundred forty-seven million, one hundred thirty thousand, one hundred twenty-one".