1230100221 has 16 divisors (see below), whose sum is σ = 1939075200. Its totient is φ = 678675648.

The previous prime is 1230100219. The next prime is 1230100247. The reversal of 1230100221 is 1220010321.

It is not a de Polignac number, because 1230100221 - 2¹ = 1230100219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1230100197 and 1230100206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230100271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1009326 + ... + 1010543.

It is an arithmetic number, because the mean of its divisors is an integer number (121192200).

Almost surely, 2^1230100221 is an apocalyptic number.

It is an amenable number.

1230100221 is a deficient number, since it is larger than the sum of its proper divisors (708974979).

1230100221 is a wasteful number, since it uses less digits than its factorization.

1230100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2019908.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1230100221 is about 35072.7846199870. The cubic root of 1230100221 is about 1071.4703694195.

Adding to 1230100221 its reverse (1220010321), we get a palindrome (2450110542).

It can be divided in two parts, 1230100 and 221, that added together give a palindrome (1230321).

The spelling of 1230100221 in words is "one billion, two hundred thirty million, one hundred thousand, two hundred twenty-one".