221426003630 has 32 divisors (see below), whose sum is σ = 429715437984. Its totient is φ = 81664027776.

The previous prime is 221426003611. The next prime is 221426003633. The reversal of 221426003630 is 36300624122.

221426003630 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 221426003593 and 221426003602.

It is a congruent number.

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 (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 857072 + ... + 1085091.

It is an arithmetic number, because the mean of its divisors is an integer number (13428607437).

Almost surely, 2^221426003630 is an apocalyptic number.

221426003630 is a deficient number, since it is larger than the sum of its proper divisors (208289434354).

221426003630 is a wasteful number, since it uses less digits than its factorization.

221426003630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1943060.

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 221426003630 its reverse (36300624122), we get a palindrome (257726627752).

The spelling of 221426003630 in words is "two hundred twenty-one billion, four hundred twenty-six million, three thousand, six hundred thirty".