101100001999 has 2 divisors, whose sum is σ = 101100002000. Its totient is φ = 101100001998.

The previous prime is 101100001969. The next prime is 101100002023. The reversal of 101100001999 is 999100001101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101100001999 - 2¹⁵ = 101099969231 is a prime.

It is a super-3 number, since 3×101100001999³ (a number of 34 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 101100001999.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101100001939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50550000999 + 50550001000.

It is an arithmetic number, because the mean of its divisors is an integer number (50550001000).

Almost surely, 2^101100001999 is an apocalyptic number.

101100001999 is a deficient number, since it is larger than the sum of its proper divisors (1).

101100001999 is an equidigital number, since it uses as much as digits as its factorization.

101100001999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 729, while the sum is 31.

The spelling of 101100001999 in words is "one hundred one billion, one hundred million, one thousand, nine hundred ninety-nine".