121283147 has 2 divisors, whose sum is σ = 121283148. Its totient is φ = 121283146.

The previous prime is 121283111. The next prime is 121283153. The reversal of 121283147 is 741382121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121283147 - 2⁸ = 121282891 is a prime.

It is not a weakly prime, because it can be changed into another prime (121283167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60641573 + 60641574.

It is an arithmetic number, because the mean of its divisors is an integer number (60641574).

Almost surely, 2^121283147 is an apocalyptic number.

121283147 is a deficient number, since it is larger than the sum of its proper divisors (1).

121283147 is an equidigital number, since it uses as much as digits as its factorization.

121283147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2688, while the sum is 29.

The square root of 121283147 is about 11012.8627976562. The cubic root of 121283147 is about 494.9942481391.

The spelling of 121283147 in words is "one hundred twenty-one million, two hundred eighty-three thousand, one hundred forty-seven".