126100221 has 8 divisors (see below), whose sum is σ = 181067040. Its totient is φ = 77600112.

The previous prime is 126100213. The next prime is 126100229. The reversal of 126100221 is 122001621.

It is an interprime number because it is at equal distance from previous prime (126100213) and next prime (126100229).

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

It is not a de Polignac number, because 126100221 - 2³ = 126100213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 126100221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126100229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1616631 + ... + 1616708.

It is an arithmetic number, because the mean of its divisors is an integer number (22633380).

Almost surely, 2^126100221 is an apocalyptic number.

It is an amenable number.

126100221 is a deficient number, since it is larger than the sum of its proper divisors (54966819).

126100221 is a wasteful number, since it uses less digits than its factorization.

126100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3233355.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 126100221 is about 11229.4354711179. The cubic root of 126100221 is about 501.4626783053.

Adding to 126100221 its reverse (122001621), we get a palindrome (248101842).

The spelling of 126100221 in words is "one hundred twenty-six million, one hundred thousand, two hundred twenty-one".