1221432032006 has 8 divisors (see below), whose sum is σ = 1911806658864. Its totient is φ = 584163145720.

The previous prime is 1221432031979. The next prime is 1221432032039. The reversal of 1221432032006 is 6002302341221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13276435085 + ... + 13276435176.

It is an arithmetic number, because the mean of its divisors is an integer number (238975832358).

Almost surely, 2^{1221432032006} is an apocalyptic number.

1221432032006 is a deficient number, since it is larger than the sum of its proper divisors (690374626858).

1221432032006 is a wasteful number, since it uses less digits than its factorization.

1221432032006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26552870286.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 1221432032006 its reverse (6002302341221), we get a palindrome (7223734373227).

The spelling of 1221432032006 in words is "one trillion, two hundred twenty-one billion, four hundred thirty-two million, thirty-two thousand, six".