101101001172 has 24 divisors (see below), whose sum is σ = 249778944576. Its totient is φ = 31717961088.

The previous prime is 101101001171. The next prime is 101101001207. The reversal of 101101001172 is 271100101101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101101001171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247796368 + ... + 247796775.

It is an arithmetic number, because the mean of its divisors is an integer number (10407456024).

Almost surely, 2^101101001172 is an apocalyptic number.

101101001172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

101101001172 is an abundant number, since it is smaller than the sum of its proper divisors (148677943404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

101101001172 is a wasteful number, since it uses less digits than its factorization.

101101001172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495593167 (or 495593165 counting only the distinct ones).

The product of its (nonzero) digits is 14, while the sum is 15.

Adding to 101101001172 its reverse (271100101101), we get a palindrome (372201102273).

The spelling of 101101001172 in words is "one hundred one billion, one hundred one million, one thousand, one hundred seventy-two".