101013221 has 4 divisors (see below), whose sum is σ = 104271744. Its totient is φ = 97754700.

The previous prime is 101013203. The next prime is 101013257. The reversal of 101013221 is 122310101.

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.

It is a cyclic number.

It is not a de Polignac number, because 101013221 - 2²⁶ = 33904357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101013281) 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, 1629215 + ... + 1629276.

It is an arithmetic number, because the mean of its divisors is an integer number (26067936).

Almost surely, 2^101013221 is an apocalyptic number.

It is an amenable number.

101013221 is a deficient number, since it is larger than the sum of its proper divisors (3258523).

101013221 is an equidigital number, since it uses as much as digits as its factorization.

101013221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3258522.

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

The square root of 101013221 is about 10050.5333689312. The cubic root of 101013221 is about 465.7212701323.

Adding to 101013221 its reverse (122310101), we get a palindrome (223323322).

The spelling of 101013221 in words is "one hundred one million, thirteen thousand, two hundred twenty-one".