221032130412 has 24 divisors (see below), whose sum is σ = 517040746096. Its totient is φ = 73491789888.

The previous prime is 221032130381. The next prime is 221032130461. The reversal of 221032130412 is 214031230122.

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, 23193403 + ... + 23202930.

Almost surely, 2^221032130412 is an apocalyptic number.

It is an amenable number.

221032130412 is an abundant number, since it is smaller than the sum of its proper divisors (296008615684).

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

221032130412 is a wasteful number, since it uses less digits than its factorization.

221032130412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46396737 (or 46396735 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 221032130412 its reverse (214031230122), we get a palindrome (435063360534).

The spelling of 221032130412 in words is "two hundred twenty-one billion, thirty-two million, one hundred thirty thousand, four hundred twelve".