20011122199 has 2 divisors, whose sum is σ = 20011122200. Its totient is φ = 20011122198.

The previous prime is 20011122181. The next prime is 20011122227. The reversal of 20011122199 is 99122111002.

It is an a-pointer prime, because the next prime (20011122227) can be obtained adding 20011122199 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20011122199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20011122799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005561099 + 10005561100.

It is an arithmetic number, because the mean of its divisors is an integer number (10005561100).

Almost surely, 2^20011122199 is an apocalyptic number.

20011122199 is a deficient number, since it is larger than the sum of its proper divisors (1).

20011122199 is an equidigital number, since it uses as much as digits as its factorization.

20011122199 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 28.

The spelling of 20011122199 in words is "twenty billion, eleven million, one hundred twenty-two thousand, one hundred ninety-nine".