101311121 has 4 divisors (see below), whose sum is σ = 101337600. Its totient is φ = 101284644.

The previous prime is 101311087. The next prime is 101311151. The reversal of 101311121 is 121113101.

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, and also an emirpimes, since its reverse is a distinct semiprime: 121113101 = 23 ⋅5265787.

It is a cyclic number.

It is not a de Polignac number, because 101311121 - 2¹⁸ = 101048977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101311151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6281 + ... + 15558.

It is an arithmetic number, because the mean of its divisors is an integer number (25334400).

Almost surely, 2^101311121 is an apocalyptic number.

It is an amenable number.

101311121 is a deficient number, since it is larger than the sum of its proper divisors (26479).

101311121 is an equidigital number, since it uses as much as digits as its factorization.

101311121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26478.

The product of its (nonzero) digits is 6, while the sum is 11.

The square root of 101311121 is about 10065.3425674440. The cubic root of 101311121 is about 466.1786432785.

Adding to 101311121 its reverse (121113101), we get a palindrome (222424222).

It can be divided in two parts, 10 and 1311121, that added together give a palindrome (1311131).

The spelling of 101311121 in words is "one hundred one million, three hundred eleven thousand, one hundred twenty-one".