221214132244 has 48 divisors (see below), whose sum is σ = 447302314368. Its totient is φ = 93765224448.

The previous prime is 221214132179. The next prime is 221214132263. The reversal of 221214132244 is 442231412122.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1402732 + ... + 1552444.

It is an arithmetic number, because the mean of its divisors is an integer number (9318798216).

Almost surely, 2^221214132244 is an apocalyptic number.

It is an amenable number.

221214132244 is an abundant number, since it is smaller than the sum of its proper divisors (226088182124).

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

221214132244 is a wasteful number, since it uses less digits than its factorization.

221214132244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150304 (or 150302 counting only the distinct ones).

The product of its digits is 6144, while the sum is 28.

Adding to 221214132244 its reverse (442231412122), we get a palindrome (663445544366).

The spelling of 221214132244 in words is "two hundred twenty-one billion, two hundred fourteen million, one hundred thirty-two thousand, two hundred forty-four".