101131211 has 4 divisors (see below), whose sum is σ = 101289624. Its totient is φ = 100972800.

The previous prime is 101131201. The next prime is 101131237. The reversal of 101131211 is 112131101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 112131101 = 1663 ⋅67427.

It is a cyclic number.

It is not a de Polignac number, because 101131211 - 2²⁶ = 34022347 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101131192 and 101131201.

It is not an unprimeable number, because it can be changed into a prime (101131201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78245 + ... + 79526.

It is an arithmetic number, because the mean of its divisors is an integer number (25322406).

Almost surely, 2^101131211 is an apocalyptic number.

101131211 is a deficient number, since it is larger than the sum of its proper divisors (158413).

101131211 is an equidigital number, since it uses as much as digits as its factorization.

101131211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158412.

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

The square root of 101131211 is about 10056.4014935761. The cubic root of 101131211 is about 465.9025304689.

Adding to 101131211 its reverse (112131101), we get a palindrome (213262312).

The spelling of 101131211 in words is "one hundred one million, one hundred thirty-one thousand, two hundred eleven".