101030221 has 4 divisors (see below), whose sum is σ = 101051712. Its totient is φ = 101008732.

The previous prime is 101030207. The next prime is 101030233. The reversal of 101030221 is 122030101.

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 101030221 - 2⁷ = 101030093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101030198 and 101030207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101030291) 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, 325 + ... + 14218.

It is an arithmetic number, because the mean of its divisors is an integer number (25262928).

Almost surely, 2^101030221 is an apocalyptic number.

It is an amenable number.

101030221 is a deficient number, since it is larger than the sum of its proper divisors (21491).

101030221 is an equidigital number, since it uses as much as digits as its factorization.

101030221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21490.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 101030221 is about 10051.3790596117. The cubic root of 101030221 is about 465.7473948231.

Adding to 101030221 its reverse (122030101), we get a palindrome (223060322).

The spelling of 101030221 in words is "one hundred one million, thirty thousand, two hundred twenty-one".