101111002001 has 4 divisors (see below), whose sum is σ = 101113384512. Its totient is φ = 101108619492.

The previous prime is 101111001991. The next prime is 101111002049. The reversal of 101111002001 is 100200111101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101111002001 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101111002001.

It is not an unprimeable number, because it can be changed into a prime (101111001001) 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, 1126421 + ... + 1212866.

It is an arithmetic number, because the mean of its divisors is an integer number (25278346128).

Almost surely, 2^101111002001 is an apocalyptic number.

It is an amenable number.

101111002001 is a deficient number, since it is larger than the sum of its proper divisors (2382511).

101111002001 is an equidigital number, since it uses as much as digits as its factorization.

101111002001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2382510.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 101111002001 its reverse (100200111101), we get a palindrome (201311113102).

The spelling of 101111002001 in words is "one hundred one billion, one hundred eleven million, two thousand, one".