221426003632 has 20 divisors (see below), whose sum is σ = 429224385520. Its totient is φ = 110658420288.

The previous prime is 221426003611. The next prime is 221426003633. The reversal of 221426003632 is 236300624122.

It is a junction number, because it is equal to n+sod(n) for n = 221426003594 and 221426003603.

It is not an unprimeable number, because it can be changed into a prime (221426003633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3377868 + ... + 3442795.

It is an arithmetic number, because the mean of its divisors is an integer number (21461219276).

Almost surely, 2^221426003632 is an apocalyptic number.

It is an amenable number.

221426003632 is a deficient number, since it is larger than the sum of its proper divisors (207798381888).

221426003632 is a wasteful number, since it uses less digits than its factorization.

221426003632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6822700 (or 6822694 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 221426003632 its reverse (236300624122), we get a palindrome (457726627754).

The spelling of 221426003632 in words is "two hundred twenty-one billion, four hundred twenty-six million, three thousand, six hundred thirty-two".