121321283 has 2 divisors, whose sum is σ = 121321284. Its totient is φ = 121321282.

The previous prime is 121321243. The next prime is 121321307. The reversal of 121321283 is 382123121.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (382123121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121321283 is a prime.

It is not a weakly prime, because it can be changed into another prime (121321243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60660641 + 60660642.

It is an arithmetic number, because the mean of its divisors is an integer number (60660642).

Almost surely, 2^121321283 is an apocalyptic number.

121321283 is a deficient number, since it is larger than the sum of its proper divisors (1).

121321283 is an equidigital number, since it uses as much as digits as its factorization.

121321283 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 23.

The square root of 121321283 is about 11014.5940914770. The cubic root of 121321283 is about 495.0461243283.

The spelling of 121321283 in words is "one hundred twenty-one million, three hundred twenty-one thousand, two hundred eighty-three".