221232413412 has 36 divisors (see below), whose sum is σ = 565964053200. Its totient is φ = 72855653232.

The previous prime is 221232413371. The next prime is 221232413431. The reversal of 221232413412 is 214314232122.

221232413412 is a `hidden beast` number, since 2 + 2 + 1 + 2 + 3 + 241 + 3 + 412 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37017162 + ... + 37023137.

It is an arithmetic number, because the mean of its divisors is an integer number (15721223700).

Almost surely, 2^221232413412 is an apocalyptic number.

It is an amenable number.

221232413412 is an abundant number, since it is smaller than the sum of its proper divisors (344731639788).

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

221232413412 is a wasteful number, since it uses less digits than its factorization.

221232413412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74040392 (or 74040387 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

Adding to 221232413412 its reverse (214314232122), we get a palindrome (435546645534).

The spelling of 221232413412 in words is "two hundred twenty-one billion, two hundred thirty-two million, four hundred thirteen thousand, four hundred twelve".