4001221103 has 12 divisors (see below), whose sum is σ = 4427182704. Its totient is φ = 3613368000.

The previous prime is 4001221069. The next prime is 4001221109. The reversal of 4001221103 is 3011221004.

It is not a de Polignac number, because 4001221103 - 2¹² = 4001217007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4001221109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91226 + ... + 127767.

It is an arithmetic number, because the mean of its divisors is an integer number (368931892).

Almost surely, 2^4001221103 is an apocalyptic number.

4001221103 is a deficient number, since it is larger than the sum of its proper divisors (425961601).

4001221103 is a wasteful number, since it uses less digits than its factorization.

4001221103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219166 (or 219155 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 4001221103 is about 63255.2061335666. The cubic root of 4001221103 is about 1587.5625672160.

Adding to 4001221103 its reverse (3011221004), we get a palindrome (7012442107).

Subtracting from 4001221103 its reverse (3011221004), we obtain a palindrome (990000099).

The spelling of 4001221103 in words is "four billion, one million, two hundred twenty-one thousand, one hundred three".