221453334120 has 32 divisors (see below), whose sum is σ = 664360002720. Its totient is φ = 59054222400.

The previous prime is 221453334107. The next prime is 221453334127. The reversal of 221453334120 is 21433354122.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (221453334127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 922722106 + ... + 922722345.

It is an arithmetic number, because the mean of its divisors is an integer number (20761250085).

Almost surely, 2^221453334120 is an apocalyptic number.

221453334120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221453334120 is an abundant number, since it is smaller than the sum of its proper divisors (442906668600).

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

221453334120 is a wasteful number, since it uses less digits than its factorization.

221453334120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1845444465 (or 1845444461 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 221453334120 its reverse (21433354122), we get a palindrome (242886688242).

The spelling of 221453334120 in words is "two hundred twenty-one billion, four hundred fifty-three million, three hundred thirty-four thousand, one hundred twenty".