221020001221099 has 2 divisors, whose sum is σ = 221020001221100. Its totient is φ = 221020001221098.

The previous prime is 221020001221087. The next prime is 221020001221133. The reversal of 221020001221099 is 990122100020122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221020001221099 - 2¹¹ = 221020001219051 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221020001221099.

It is not a weakly prime, because it can be changed into another prime (221020001225099) 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 as a sum of consecutive naturals, namely, 110510000610549 + 110510000610550.

It is an arithmetic number, because the mean of its divisors is an integer number (110510000610550).

Almost surely, 2^{221020001221099} is an apocalyptic number.

221020001221099 is a deficient number, since it is larger than the sum of its proper divisors (1).

221020001221099 is an equidigital number, since it uses as much as digits as its factorization.

221020001221099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 31.

The spelling of 221020001221099 in words is "two hundred twenty-one trillion, twenty billion, one million, two hundred twenty-one thousand, ninety-nine".