101002011111 has 6 divisors (see below), whose sum is σ = 145891793840. Its totient is φ = 67334674068.

The previous prime is 101002011083. The next prime is 101002011113. The reversal of 101002011111 is 111110200101.

It is a de Polignac number, because none of the positive numbers 2^k-101002011111 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 11222445679 = 101002011111 / (1 + 0 + 1 + 0 + 0 + 2 + 0 + 1 + 1 + 1 + 1 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101002011093 and 101002011102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101002011113) 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 5 ways as a sum of consecutive naturals, for example, 5611222831 + ... + 5611222848.

Almost surely, 2^101002011111 is an apocalyptic number.

101002011111 is a deficient number, since it is larger than the sum of its proper divisors (44889782729).

101002011111 is a wasteful number, since it uses less digits than its factorization.

101002011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11222445685 (or 11222445682 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 101002011111 its reverse (111110200101), we get a palindrome (212112211212).

The spelling of 101002011111 in words is "one hundred one billion, two million, eleven thousand, one hundred eleven".