221400460000 has 60 divisors (see below), whose sum is σ = 544678390872. Its totient is φ = 88560176000.

The previous prime is 221400459997. The next prime is 221400460049. The reversal of 221400460000 is 64004122.

It is a self number, because there is not a number n which added to its sum of digits gives 221400460000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 5515012 + ... + 5555011.

Almost surely, 2^221400460000 is an apocalyptic number.

221400460000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221400460000 is an abundant number, since it is smaller than the sum of its proper divisors (323277930872).

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

221400460000 is an equidigital number, since it uses as much as digits as its factorization.

221400460000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11070053 (or 11070030 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 221400460000 its reverse (64004122), we get a palindrome (221464464122).

The spelling of 221400460000 in words is "two hundred twenty-one billion, four hundred million, four hundred sixty thousand".