221423133120 has 112 divisors (see below), whose sum is σ = 803449678848. Its totient is φ = 50611000320.

The previous prime is 221423133091. The next prime is 221423133131. The reversal of 221423133120 is 21331324122.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 16468216 + ... + 16481655.

Almost surely, 2^221423133120 is an apocalyptic number.

221423133120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221423133120 is an abundant number, since it is smaller than the sum of its proper divisors (582026545728).

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

221423133120 is a wasteful number, since it uses less digits than its factorization.

221423133120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32949898 (or 32949888 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 221423133120 its reverse (21331324122), we get a palindrome (242754457242).

The spelling of 221423133120 in words is "two hundred twenty-one billion, four hundred twenty-three million, one hundred thirty-three thousand, one hundred twenty".