101211823 has 2 divisors, whose sum is σ = 101211824. Its totient is φ = 101211822.

The previous prime is 101211757. The next prime is 101211833. The reversal of 101211823 is 328112101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101211823 - 2¹⁷ = 101080751 is a prime.

It is a super-2 number, since 2×101211823² = 20487666229966658, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 101211823.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101211833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50605911 + 50605912.

It is an arithmetic number, because the mean of its divisors is an integer number (50605912).

Almost surely, 2^101211823 is an apocalyptic number.

101211823 is a deficient number, since it is larger than the sum of its proper divisors (1).

101211823 is an equidigital number, since it uses as much as digits as its factorization.

101211823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 19.

The square root of 101211823 is about 10060.4086895116. The cubic root of 101211823 is about 466.0262883731.

Adding to 101211823 its reverse (328112101), we get a palindrome (429323924).

The spelling of 101211823 in words is "one hundred one million, two hundred eleven thousand, eight hundred twenty-three".