101042221 has 8 divisors (see below), whose sum is σ = 117656064. Its totient is φ = 84973200.

The previous prime is 101042189. The next prime is 101042239. The reversal of 101042221 is 122240101.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 101042221 - 2⁵ = 101042189 is a prime.

It is a super-2 number, since 2×101042221² = 20419060849225682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101042251) 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 7 ways as a sum of consecutive naturals, for example, 135805 + ... + 136546.

It is an arithmetic number, because the mean of its divisors is an integer number (14707008).

Almost surely, 2^101042221 is an apocalyptic number.

It is an amenable number.

101042221 is a deficient number, since it is larger than the sum of its proper divisors (16613843).

101042221 is an equidigital number, since it uses as much as digits as its factorization.

101042221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272411.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 101042221 is about 10051.9759749017. The cubic root of 101042221 is about 465.7658340169.

Adding to 101042221 its reverse (122240101), we get a palindrome (223282322).

The spelling of 101042221 in words is "one hundred one million, forty-two thousand, two hundred twenty-one".