101243011 has 4 divisors (see below), whose sum is σ = 101277000. Its totient is φ = 101209024.

The previous prime is 101242979. The next prime is 101243047. The reversal of 101243011 is 110342101.

101243011 is nontrivially palindromic in base 2.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110342101 = 19 ⋅5807479.

It is a cyclic number.

It is not a de Polignac number, because 101243011 - 2⁵ = 101242979 is a prime.

It is a super-2 number, since 2×101243011² = 20500294552692242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101242982 and 101243000.

It is not an unprimeable number, because it can be changed into a prime (101243711) 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, 12046 + ... + 18643.

It is an arithmetic number, because the mean of its divisors is an integer number (25319250).

Almost surely, 2^101243011 is an apocalyptic number.

101243011 is a deficient number, since it is larger than the sum of its proper divisors (33989).

101243011 is an equidigital number, since it uses as much as digits as its factorization.

101243011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33988.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 101243011 is about 10061.9586065537. The cubic root of 101243011 is about 466.0741514745.

Adding to 101243011 its reverse (110342101), we get a palindrome (211585112).

The spelling of 101243011 in words is "one hundred one million, two hundred forty-three thousand, eleven".