1221424041 has 16 divisors (see below), whose sum is σ = 1727313984. Its totient is φ = 765072384.

The previous prime is 1221424033. The next prime is 1221424049. The reversal of 1221424041 is 1404241221.

1221424041 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1221424033) and next prime (1221424049).

It is not a de Polignac number, because 1221424041 - 2³ = 1221424033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1221423999 and 1221424017.

It is not an unprimeable number, because it can be changed into a prime (1221424049) 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, 10050 + ... + 50436.

It is an arithmetic number, because the mean of its divisors is an integer number (107957124).

Almost surely, 2^1221424041 is an apocalyptic number.

It is an amenable number.

1221424041 is a deficient number, since it is larger than the sum of its proper divisors (505889943).

1221424041 is a wasteful number, since it uses less digits than its factorization.

1221424041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41000.

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 1221424041 is about 34948.8775356234. The cubic root of 1221424041 is about 1068.9453144357.

Adding to 1221424041 its reverse (1404241221), we get a palindrome (2625665262).

The spelling of 1221424041 in words is "one billion, two hundred twenty-one million, four hundred twenty-four thousand, forty-one".