101024221 has 4 divisors (see below), whose sum is σ = 101054844. Its totient is φ = 100993600.

The previous prime is 101024219. The next prime is 101024233. The reversal of 101024221 is 122420101.

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: 122420101 = 47 ⋅2604683.

It can be written as a sum of positive squares in 2 ways, for example, as 18922500 + 82101721 = 4350^2 + 9061^2 .

It is a cyclic number.

It is not a de Polignac number, because 101024221 - 2¹ = 101024219 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 (101024281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9670 + ... + 17191.

It is an arithmetic number, because the mean of its divisors is an integer number (25263711).

Almost surely, 2^101024221 is an apocalyptic number.

It is an amenable number.

101024221 is a deficient number, since it is larger than the sum of its proper divisors (30623).

101024221 is an equidigital number, since it uses as much as digits as its factorization.

101024221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30622.

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

The square root of 101024221 is about 10051.0805886730. The cubic root of 101024221 is about 465.7381746787.

Adding to 101024221 its reverse (122420101), we get a palindrome (223444322).

The spelling of 101024221 in words is "one hundred one million, twenty-four thousand, two hundred twenty-one".