221431421676403 has 16 divisors (see below), whose sum is σ = 225156284891136. Its totient is φ = 217737625392000.

The previous prime is 221431421676389. The next prime is 221431421676419. The reversal of 221431421676403 is 304676124134122.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221431421676403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221431421676463) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 563094550 + ... + 563487652.

It is an arithmetic number, because the mean of its divisors is an integer number (14072267805696).

Almost surely, 2^{221431421676403} is an apocalyptic number.

221431421676403 is a deficient number, since it is larger than the sum of its proper divisors (3724863214733).

221431421676403 is a wasteful number, since it uses less digits than its factorization.

221431421676403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432594.

The product of its (nonzero) digits is 1161216, while the sum is 46.

The spelling of 221431421676403 in words is "two hundred twenty-one trillion, four hundred thirty-one billion, four hundred twenty-one million, six hundred seventy-six thousand, four hundred three".