101211023 has 4 divisors (see below), whose sum is σ = 101405808. Its totient is φ = 101016240.

The previous prime is 101211007. The next prime is 101211029. The reversal of 101211023 is 320112101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 101211023 - 2⁴ = 101211007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101210995 and 101211013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101211029) 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, 96611 + ... + 97652.

It is an arithmetic number, because the mean of its divisors is an integer number (25351452).

Almost surely, 2^101211023 is an apocalyptic number.

101211023 is a deficient number, since it is larger than the sum of its proper divisors (194785).

101211023 is an equidigital number, since it uses as much as digits as its factorization.

101211023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194784.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 101211023 is about 10060.3689296168. The cubic root of 101211023 is about 466.0250605126.

Adding to 101211023 its reverse (320112101), we get a palindrome (421323124).

The spelling of 101211023 in words is "one hundred one million, two hundred eleven thousand, twenty-three".