122384981 has 2 divisors, whose sum is σ = 122384982. Its totient is φ = 122384980.

The previous prime is 122384963. The next prime is 122384987. The reversal of 122384981 is 189483221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117831025 + 4553956 = 10855^2 + 2134^2 .

It is an emirp because it is prime and its reverse (189483221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122384981 - 2⁶ = 122384917 is a prime.

It is a super-2 number, since 2×122384981² = 29956167148740722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122384987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61192490 + 61192491.

It is an arithmetic number, because the mean of its divisors is an integer number (61192491).

Almost surely, 2^122384981 is an apocalyptic number.

It is an amenable number.

122384981 is a deficient number, since it is larger than the sum of its proper divisors (1).

122384981 is an equidigital number, since it uses as much as digits as its factorization.

122384981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27648, while the sum is 38.

The square root of 122384981 is about 11062.7745615646. The cubic root of 122384981 is about 496.4887073699.

The spelling of 122384981 in words is "one hundred twenty-two million, three hundred eighty-four thousand, nine hundred eighty-one".