221221122311132 has 12 divisors (see below), whose sum is σ = 387140068493640. Its totient is φ = 110609674170096.

The previous prime is 221221122311089. The next prime is 221221122311159. The reversal of 221221122311132 is 231113221122122.

It is a super-2 number, since 2×221221122311132² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221185043 + ... + 222182954.

It is an arithmetic number, because the mean of its divisors is an integer number (32261672374470).

Almost surely, 2^{221221122311132} is an apocalyptic number.

It is an amenable number.

221221122311132 is a deficient number, since it is larger than the sum of its proper divisors (165918946182508).

221221122311132 is a wasteful number, since it uses less digits than its factorization.

221221122311132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443492740 (or 443492738 counting only the distinct ones).

The product of its digits is 1152, while the sum is 26.

Adding to 221221122311132 its reverse (231113221122122), we get a palindrome (452334343433254).

The spelling of 221221122311132 in words is "two hundred twenty-one trillion, two hundred twenty-one billion, one hundred twenty-two million, three hundred eleven thousand, one hundred thirty-two".