221321123432002 has 32 divisors (see below), whose sum is σ = 372648497413824. Its totient is φ = 97725136392000.

The previous prime is 221321123431879. The next prime is 221321123432011. The reversal of 221321123432002 is 200234321123122.

It is a happy 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, 939547008 + ... + 939782539.

It is an arithmetic number, because the mean of its divisors is an integer number (11645265544182).

Almost surely, 2^{221321123432002} is an apocalyptic number.

221321123432002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221321123432002 is a deficient number, since it is larger than the sum of its proper divisors (151327373981822).

221321123432002 is a wasteful number, since it uses less digits than its factorization.

221321123432002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1879329714.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 221321123432002 its reverse (200234321123122), we get a palindrome (421555444555124).

The spelling of 221321123432002 in words is "two hundred twenty-one trillion, three hundred twenty-one billion, one hundred twenty-three million, four hundred thirty-two thousand, two".