221412504403700 has 36 divisors (see below), whose sum is σ = 480818158462572. Its totient is φ = 88499928230400.

The previous prime is 221412504403687. The next prime is 221412504403729. The reversal of 221412504403700 is 7304405214122.

It can be written as a sum of positive squares in 6 ways, for example, as 16022503907344 + 205390000496356 = 4002812^2 + 14331434^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 813282359 + ... + 813554558.

Almost surely, 2^{221412504403700} is an apocalyptic number.

221412504403700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221412504403700 is an abundant number, since it is smaller than the sum of its proper divisors (259405654058872).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221412504403700 is a wasteful number, since it uses less digits than its factorization.

221412504403700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1626838292 (or 1626838285 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 35.

Adding to 221412504403700 its reverse (7304405214122), we get a palindrome (228716909617822).

The spelling of 221412504403700 in words is "two hundred twenty-one trillion, four hundred twelve billion, five hundred four million, four hundred three thousand, seven hundred".