221411125403 has 16 divisors (see below), whose sum is σ = 239270060736. Its totient is φ = 203671480320.

The previous prime is 221411125393. The next prime is 221411125471. The reversal of 221411125403 is 304521114122.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221411125403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221411125003) 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, 4936826 + ... + 4981472.

It is an arithmetic number, because the mean of its divisors is an integer number (14954378796).

Almost surely, 2^221411125403 is an apocalyptic number.

221411125403 is a deficient number, since it is larger than the sum of its proper divisors (17858935333).

221411125403 is a wasteful number, since it uses less digits than its factorization.

221411125403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45974.

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 221411125403 its reverse (304521114122), we get a palindrome (525932239525).

The spelling of 221411125403 in words is "two hundred twenty-one billion, four hundred eleven million, one hundred twenty-five thousand, four hundred three".