101011099999 has 4 divisors (see below), whose sum is σ = 101013147136. Its totient is φ = 101009052864.

The previous prime is 101011099997. The next prime is 101011100017. The reversal of 101011099999 is 999990110101.

It is a happy number.

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 101011099999 - 2¹ = 101011099997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101011099993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 947679 + ... + 1048864.

It is an arithmetic number, because the mean of its divisors is an integer number (25253286784).

Almost surely, 2^101011099999 is an apocalyptic number.

101011099999 is a deficient number, since it is larger than the sum of its proper divisors (2047137).

101011099999 is an equidigital number, since it uses as much as digits as its factorization.

101011099999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2047136.

The product of its (nonzero) digits is 59049, while the sum is 49.

The spelling of 101011099999 in words is "one hundred one billion, eleven million, ninety-nine thousand, nine hundred ninety-nine".