2241212421 has 16 divisors (see below), whose sum is σ = 3484880000. Its totient is φ = 1280692224.

The previous prime is 2241212411. The next prime is 2241212429. The reversal of 2241212421 is 1242121422.

It is not a de Polignac number, because 2241212421 - 2⁷ = 2241212293 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2241212429) 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 15 ways as a sum of consecutive naturals, for example, 1087996 + ... + 1090053.

It is an arithmetic number, because the mean of its divisors is an integer number (217805000).

Almost surely, 2^2241212421 is an apocalyptic number.

2241212421 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2241212421 is a deficient number, since it is larger than the sum of its proper divisors (1243667579).

2241212421 is an equidigital number, since it uses as much as digits as its factorization.

2241212421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2178073 (or 2178059 counting only the distinct ones).

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

The square root of 2241212421 is about 47341.4450666644. The cubic root of 2241212421 is about 1308.6625475381.

Adding to 2241212421 its reverse (1242121422), we get a palindrome (3483333843).

Subtracting from 2241212421 its reverse (1242121422), we obtain a palindrome (999090999).

The spelling of 2241212421 in words is "two billion, two hundred forty-one million, two hundred twelve thousand, four hundred twenty-one".