20199107 has 2 divisors, whose sum is σ = 20199108. Its totient is φ = 20199106.

The previous prime is 20199103. The next prime is 20199131. The reversal of 20199107 is 70199102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20199107 - 2² = 20199103 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20199107.

It is not a weakly prime, because it can be changed into another prime (20199103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10099553 + 10099554.

It is an arithmetic number, because the mean of its divisors is an integer number (10099554).

Almost surely, 2^20199107 is an apocalyptic number.

20199107 is a deficient number, since it is larger than the sum of its proper divisors (1).

20199107 is an equidigital number, since it uses as much as digits as its factorization.

20199107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1134, while the sum is 29.

The square root of 20199107 is about 4494.3416648048. The cubic root of 20199107 is about 272.3395548501.

The spelling of 20199107 in words is "twenty million, one hundred ninety-nine thousand, one hundred seven".