221100112212232 has 32 divisors (see below), whose sum is σ = 452276669164320. Its totient is φ = 100494175530240.

The previous prime is 221100112212181. The next prime is 221100112212241. The reversal of 221100112212232 is 232212211001122.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71929473 + ... + 74940304.

It is an arithmetic number, because the mean of its divisors is an integer number (14133645911385).

Almost surely, 2^{221100112212232} is an apocalyptic number.

221100112212232 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

221100112212232 is an abundant number, since it is smaller than the sum of its proper divisors (231176556952088).

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

221100112212232 is a wasteful number, since it uses less digits than its factorization.

221100112212232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146886901 (or 146886897 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 221100112212232 its reverse (232212211001122), we get a palindrome (453312323213354).

The spelling of 221100112212232 in words is "two hundred twenty-one trillion, one hundred billion, one hundred twelve million, two hundred twelve thousand, two hundred thirty-two".