221321032123132 has 6 divisors (see below), whose sum is σ = 387311806215488. Its totient is φ = 110660516061564.

The previous prime is 221321032123111. The next prime is 221321032123151. The reversal of 221321032123132 is 231321230123122.

It is a self number, because there is not a number n which added to its sum of digits gives 221321032123132.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27665129015388 + ... + 27665129015395.

Almost surely, 2^{221321032123132} is an apocalyptic number.

It is an amenable number.

221321032123132 is a deficient number, since it is larger than the sum of its proper divisors (165990774092356).

221321032123132 is a wasteful number, since it uses less digits than its factorization.

221321032123132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55330258030787 (or 55330258030785 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 221321032123132 its reverse (231321230123122), we get a palindrome (452642262246254).

The spelling of 221321032123132 in words is "two hundred twenty-one trillion, three hundred twenty-one billion, thirty-two million, one hundred twenty-three thousand, one hundred thirty-two".