123020099 has 2 divisors, whose sum is σ = 123020100. Its totient is φ = 123020098.

The previous prime is 123020087. The next prime is 123020101. The reversal of 123020099 is 990020321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123020099 - 2⁸ = 123019843 is a prime.

Together with 123020101, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_7003736 and since 123020099 and 7003736 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (123025099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61510049 + 61510050.

It is an arithmetic number, because the mean of its divisors is an integer number (61510050).

Almost surely, 2^123020099 is an apocalyptic number.

123020099 is a deficient number, since it is larger than the sum of its proper divisors (1).

123020099 is an equidigital number, since it uses as much as digits as its factorization.

123020099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 123020099 is about 11091.4426022948. The cubic root of 123020099 is about 497.3460702370.

The spelling of 123020099 in words is "one hundred twenty-three million, twenty thousand, ninety-nine".