221211430112 has 48 divisors (see below), whose sum is σ = 465273930240. Its totient is φ = 103220396928.

The previous prime is 221211430081. The next prime is 221211430127. The reversal of 221211430112 is 211034112122.

It is a congruent number.

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, 2674448 + ... + 2755919.

It is an arithmetic number, because the mean of its divisors is an integer number (9693206880).

Almost surely, 2^221211430112 is an apocalyptic number.

It is an amenable number.

221211430112 is an abundant number, since it is smaller than the sum of its proper divisors (244062500128).

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

221211430112 is a wasteful number, since it uses less digits than its factorization.

221211430112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5430463 (or 5430455 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 221211430112 its reverse (211034112122), we get a palindrome (432245542234).

The spelling of 221211430112 in words is "two hundred twenty-one billion, two hundred eleven million, four hundred thirty thousand, one hundred twelve".