121443983 has 2 divisors, whose sum is σ = 121443984. Its totient is φ = 121443982.

The previous prime is 121443923. The next prime is 121443989. The reversal of 121443983 is 389344121.

It is a strong prime.

It is an emirp because it is prime and its reverse (389344121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121443983 - 2⁸ = 121443727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121443989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60721991 + 60721992.

It is an arithmetic number, because the mean of its divisors is an integer number (60721992).

Almost surely, 2^121443983 is an apocalyptic number.

121443983 is a deficient number, since it is larger than the sum of its proper divisors (1).

121443983 is an equidigital number, since it uses as much as digits as its factorization.

121443983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 35.

The square root of 121443983 is about 11020.1625668590. The cubic root of 121443983 is about 495.2129587368.

The spelling of 121443983 in words is "one hundred twenty-one million, four hundred forty-three thousand, nine hundred eighty-three".