221234012031412 has 6 divisors (see below), whose sum is σ = 387159521054978. Its totient is φ = 110617006015704.

The previous prime is 221234012031301. The next prime is 221234012031433. The reversal of 221234012031412 is 214130210432122.

It can be written as a sum of positive squares in only one way, i.e., 184269873756816 + 36964138274596 = 13574604^2 + 6079814^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27654251503923 + ... + 27654251503930.

Almost surely, 2^{221234012031412} is an apocalyptic number.

It is an amenable number.

221234012031412 is a deficient number, since it is larger than the sum of its proper divisors (165925509023566).

221234012031412 is a wasteful number, since it uses less digits than its factorization.

221234012031412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55308503007857 (or 55308503007855 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 221234012031412 its reverse (214130210432122), we get a palindrome (435364222463534).

The spelling of 221234012031412 in words is "two hundred twenty-one trillion, two hundred thirty-four billion, twelve million, thirty-one thousand, four hundred twelve".