101111001005 has 16 divisors (see below), whose sum is σ = 138740719104. Its totient is φ = 69296156160.

The previous prime is 101111001001. The next prime is 101111001037. The reversal of 101111001005 is 500100111101.

It is a happy number.

It is not a de Polignac number, because 101111001005 - 2² = 101111001001 is a prime.

It is a super-2 number, since 2×101111001005² (a number of 23 digits) 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 (101111001001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 706532 + ... + 837501.

It is an arithmetic number, because the mean of its divisors is an integer number (8671294944).

Almost surely, 2^101111001005 is an apocalyptic number.

It is an amenable number.

101111001005 is a deficient number, since it is larger than the sum of its proper divisors (37629718099).

101111001005 is a wasteful number, since it uses less digits than its factorization.

101111001005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1545916.

The product of its (nonzero) digits is 5, while the sum is 11.

Adding to 101111001005 its reverse (500100111101), we get a palindrome (601211112106).

The spelling of 101111001005 in words is "one hundred one billion, one hundred eleven million, one thousand, five".