2422999981 has 2 divisors, whose sum is σ = 2422999982. Its totient is φ = 2422999980.

The previous prime is 2422999949. The next prime is 2423000003. The reversal of 2422999981 is 1899992242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1702882756 + 720117225 = 41266^2 + 26835^2 .

It is a cyclic number.

It is not a de Polignac number, because 2422999981 - 2⁵ = 2422999949 is a prime.

It is a super-2 number, since 2×2422999981² = 11741857815852000722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2422999081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1211499990 + 1211499991.

It is an arithmetic number, because the mean of its divisors is an integer number (1211499991).

Almost surely, 2^2422999981 is an apocalyptic number.

It is an amenable number.

2422999981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2422999981 is an equidigital number, since it uses as much as digits as its factorization.

2422999981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1679616, while the sum is 55.

The square root of 2422999981 is about 49223.9777039605. The cubic root of 2422999981 is about 1343.1292392445.

The spelling of 2422999981 in words is "two billion, four hundred twenty-two million, nine hundred ninety-nine thousand, nine hundred eighty-one".