3220421243 has 24 divisors (see below), whose sum is σ = 3549210336. Its totient is φ = 2920320000.

The previous prime is 3220421227. The next prime is 3220421287. The reversal of 3220421243 is 3421240223.

It is not a de Polignac number, because 3220421243 - 2⁴ = 3220421227 is a prime.

It is a super-2 number, since 2×3220421243² = 20742225964731330098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3220420243) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2474693 + ... + 2475993.

It is an arithmetic number, because the mean of its divisors is an integer number (147883764).

Almost surely, 2^3220421243 is an apocalyptic number.

3220421243 is a deficient number, since it is larger than the sum of its proper divisors (328789093).

3220421243 is a wasteful number, since it uses less digits than its factorization.

3220421243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1575 (or 1562 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 3220421243 is about 56748.7554312868. The cubic root of 3220421243 is about 1476.7406424516.

Adding to 3220421243 its reverse (3421240223), we get a palindrome (6641661466).

The spelling of 3220421243 in words is "three billion, two hundred twenty million, four hundred twenty-one thousand, two hundred forty-three".