221432122412 has 48 divisors (see below), whose sum is σ = 402208934400. Its totient is φ = 106541413440.

The previous prime is 221432122411. The next prime is 221432122453. The reversal of 221432122412 is 214221234122.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (221432122411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58593539 + ... + 58597317.

It is an arithmetic number, because the mean of its divisors is an integer number (8379352800).

Almost surely, 2^221432122412 is an apocalyptic number.

It is an amenable number.

221432122412 is a deficient number, since it is larger than the sum of its proper divisors (180776811988).

221432122412 is a wasteful number, since it uses less digits than its factorization.

221432122412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5366 (or 5364 counting only the distinct ones).

The product of its digits is 3072, while the sum is 26.

Adding to 221432122412 its reverse (214221234122), we get a palindrome (435653356534).

The spelling of 221432122412 in words is "two hundred twenty-one billion, four hundred thirty-two million, one hundred twenty-two thousand, four hundred twelve".