221301101212 has 48 divisors (see below), whose sum is σ = 417380318208. Its totient is φ = 102298291200.

The previous prime is 221301101209. The next prime is 221301101251. The reversal of 221301101212 is 212101103122.

221301101212 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 745378 + ... + 999094.

It is an arithmetic number, because the mean of its divisors is an integer number (8695423296).

Almost surely, 2^221301101212 is an apocalyptic number.

It is an amenable number.

221301101212 is a deficient number, since it is larger than the sum of its proper divisors (196079216996).

221301101212 is a wasteful number, since it uses less digits than its factorization.

221301101212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253966 (or 253964 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 221301101212 its reverse (212101103122), we get a palindrome (433402204334).

The spelling of 221301101212 in words is "two hundred twenty-one billion, three hundred one million, one hundred one thousand, two hundred twelve".