20430112121099 has 2 divisors, whose sum is σ = 20430112121100. Its totient is φ = 20430112121098.

The previous prime is 20430112121071. The next prime is 20430112121123. The reversal of 20430112121099 is 99012121103402.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20430112121099 - 2¹² = 20430112117003 is a prime.

It is not a weakly prime, because it can be changed into another prime (20430112121059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10215056060549 + 10215056060550.

It is an arithmetic number, because the mean of its divisors is an integer number (10215056060550).

Almost surely, 2^{20430112121099} is an apocalyptic number.

20430112121099 is a deficient number, since it is larger than the sum of its proper divisors (1).

20430112121099 is an equidigital number, since it uses as much as digits as its factorization.

20430112121099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 35.

The spelling of 20430112121099 in words is "twenty trillion, four hundred thirty billion, one hundred twelve million, one hundred twenty-one thousand, ninety-nine".