1230241221 has 12 divisors (see below), whose sum is σ = 1938562080. Its totient is φ = 745600680.

The previous prime is 1230241183. The next prime is 1230241237. The reversal of 1230241221 is 1221420321.

It is a happy number.

1230241221 is a `hidden beast` number, since 1 + 230 + 2 + 412 + 21 = 666.

It is not a de Polignac number, because 1230241221 - 2¹⁵ = 1230208453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1230241194 and 1230241203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230241291) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6213241 + ... + 6213438.

It is an arithmetic number, because the mean of its divisors is an integer number (161546840).

Almost surely, 2^1230241221 is an apocalyptic number.

1230241221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1230241221 is a deficient number, since it is larger than the sum of its proper divisors (708320859).

1230241221 is a wasteful number, since it uses less digits than its factorization.

1230241221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12426696 (or 12426693 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1230241221 is about 35074.7946679663. The cubic root of 1230241221 is about 1071.5113068834.

Adding to 1230241221 its reverse (1221420321), we get a palindrome (2451661542).

Subtracting from 1230241221 its reverse (1221420321), we obtain a square (8820900 = 2970²).

The spelling of 1230241221 in words is "one billion, two hundred thirty million, two hundred forty-one thousand, two hundred twenty-one".