121121347 has 2 divisors, whose sum is σ = 121121348. Its totient is φ = 121121346.

The previous prime is 121121317. The next prime is 121121359. The reversal of 121121347 is 743121121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121121347 - 2¹⁵ = 121088579 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (121121317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60560673 + 60560674.

It is an arithmetic number, because the mean of its divisors is an integer number (60560674).

Almost surely, 2^121121347 is an apocalyptic number.

121121347 is a deficient number, since it is larger than the sum of its proper divisors (1).

121121347 is an equidigital number, since it uses as much as digits as its factorization.

121121347 is an evil number, because the sum of its binary digits is even.

The product of its digits is 336, while the sum is 22.

The square root of 121121347 is about 11005.5143905226. The cubic root of 121121347 is about 494.7740314727.

Adding to 121121347 its reverse (743121121), we get a palindrome (864242468).

The spelling of 121121347 in words is "one hundred twenty-one million, one hundred twenty-one thousand, three hundred forty-seven".