101043221 has 4 divisors (see below), whose sum is σ = 104527500. Its totient is φ = 97558944.

The previous prime is 101043199. The next prime is 101043253. The reversal of 101043221 is 122340101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122340101 = 13 ⋅9410777.

It can be written as a sum of positive squares in 2 ways, for example, as 80748196 + 20295025 = 8986^2 + 4505^2 .

It is a cyclic number.

It is not a de Polignac number, because 101043221 - 2²⁶ = 33934357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101043196 and 101043205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101045221) 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 3 ways as a sum of consecutive naturals, for example, 1742096 + ... + 1742153.

It is an arithmetic number, because the mean of its divisors is an integer number (26131875).

Almost surely, 2^101043221 is an apocalyptic number.

It is an amenable number.

101043221 is a deficient number, since it is larger than the sum of its proper divisors (3484279).

101043221 is an equidigital number, since it uses as much as digits as its factorization.

101043221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3484278.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 101043221 is about 10052.0257162425. The cubic root of 101043221 is about 465.7673705505.

Adding to 101043221 its reverse (122340101), we get a palindrome (223383322).

The spelling of 101043221 in words is "one hundred one million, forty-three thousand, two hundred twenty-one".