101137081 has 4 divisors (see below), whose sum is σ = 101214964.
Its totient is φ = 101059200.
The previous prime is 101137079. The next prime is 101137087. The reversal of 101137081 is 180731101.
It is a semiprime because it is the product of two primes.
It can be written as a sum of positive squares in 2 ways, for example, as 75533481 + 25603600 = 8691^2 + 5060^2
It is a cyclic number.
It is not a de Polignac number, because 101137081 - 21 = 101137079 is a prime.
It is a super-2 number, since 2×1011370812 = 20457418306401122, which contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (101137087) 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, 36960 + ... + 39601.
It is an arithmetic number, because the mean of its divisors is an integer number (25303741).
Almost surely, 2101137081 is an apocalyptic number.
It is an amenable number.
101137081 is a deficient number, since it is larger than the sum of its proper divisors (77883).
101137081 is an equidigital number, since it uses as much as digits as its factorization.
101137081 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 77882.
The product of its (nonzero) digits is 168, while the sum is 22.
The square root of 101137081 is about 10056.6933432416.
The cubic root of 101137081 is about 465.9115444845.
Adding to 101137081 its reverse (180731101), we get a palindrome (281868182).
The spelling of 101137081 in words is "one hundred one million, one hundred thirty-seven thousand, eighty-one".