221132203320 has 128 divisors (see below), whose sum is σ = 758293747200. Its totient is φ = 50536091136.

The previous prime is 221132203309. The next prime is 221132203321. The reversal of 221132203320 is 23302231122.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221132203321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6018766 + ... + 6055394.

It is an arithmetic number, because the mean of its divisors is an integer number (5924169900).

Almost surely, 2^221132203320 is an apocalyptic number.

221132203320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221132203320 is an abundant number, since it is smaller than the sum of its proper divisors (537161543880).

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

221132203320 is a wasteful number, since it uses less digits than its factorization.

221132203320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43837 (or 43833 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 221132203320 its reverse (23302231122), we get a palindrome (244434434442).

The spelling of 221132203320 in words is "two hundred twenty-one billion, one hundred thirty-two million, two hundred three thousand, three hundred twenty".