221402425111 has 24 divisors (see below), whose sum is σ = 258394406400. Its totient is φ = 189151828992.

The previous prime is 221402425043. The next prime is 221402425151. The reversal of 221402425111 is 111524204122.

It is a de Polignac number, because none of the positive numbers 2^k-221402425111 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 (221402425151) 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, 37850115 + ... + 37855963.

It is an arithmetic number, because the mean of its divisors is an integer number (10766433600).

Almost surely, 2^221402425111 is an apocalyptic number.

221402425111 is a deficient number, since it is larger than the sum of its proper divisors (36991981289).

221402425111 is a wasteful number, since it uses less digits than its factorization.

221402425111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8263 (or 8256 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

Adding to 221402425111 its reverse (111524204122), we get a palindrome (332926629233).

The spelling of 221402425111 in words is "two hundred twenty-one billion, four hundred two million, four hundred twenty-five thousand, one hundred eleven".