2135101999 has 4 divisors (see below), whose sum is σ = 2139184936. Its totient is φ = 2131019064.

The previous prime is 2135101981. The next prime is 2135102033. The reversal of 2135101999 is 9991015312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2135101999 - 2⁹ = 2135101487 is a prime.

It is a super-2 number, since 2×2135101999² = 9117321092267592002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2135101939) 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 in 3 ways as a sum of consecutive naturals, for example, 2040684 + ... + 2041729.

It is an arithmetic number, because the mean of its divisors is an integer number (534796234).

Almost surely, 2^2135101999 is an apocalyptic number.

2135101999 is a deficient number, since it is larger than the sum of its proper divisors (4082937).

2135101999 is an equidigital number, since it uses as much as digits as its factorization.

2135101999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4082936.

The product of its (nonzero) digits is 21870, while the sum is 40.

The square root of 2135101999 is about 46207.1639359093. The cubic root of 2135101999 is about 1287.6748370228.

The spelling of 2135101999 in words is "two billion, one hundred thirty-five million, one hundred one thousand, nine hundred ninety-nine".