2124199969 has 2 divisors, whose sum is σ = 2124199970. Its totient is φ = 2124199968.

The previous prime is 2124199967. The next prime is 2124200041. The reversal of 2124199969 is 9699914212.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2123366400 + 833569 = 46080^2 + 913^2 .

It is a cyclic number.

It is not a de Polignac number, because 2124199969 - 2¹ = 2124199967 is a prime.

It is a super-2 number, since 2×2124199969² = 9024451016599201922, which contains 22 as substring.

Together with 2124199967, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2124199967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1062099984 + 1062099985.

It is an arithmetic number, because the mean of its divisors is an integer number (1062099985).

Almost surely, 2^2124199969 is an apocalyptic number.

It is an amenable number.

2124199969 is a deficient number, since it is larger than the sum of its proper divisors (1).

2124199969 is an equidigital number, since it uses as much as digits as its factorization.

2124199969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 629856, while the sum is 52.

The square root of 2124199969 is about 46089.0439150130. The cubic root of 2124199969 is about 1285.4794335101.

The spelling of 2124199969 in words is "two billion, one hundred twenty-four million, one hundred ninety-nine thousand, nine hundred sixty-nine".