221022221099 has 2 divisors, whose sum is σ = 221022221100. Its totient is φ = 221022221098.

The previous prime is 221022221087. The next prime is 221022221131. The reversal of 221022221099 is 990122220122.

It is a happy number.

It is an a-pointer prime, because the next prime (221022221131) can be obtained adding 221022221099 to its sum of digits (32).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221022221099 - 2⁴ = 221022221083 is a prime.

It is a super-3 number, since 3×221022221099³ (a number of 35 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (221022221029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110511110549 + 110511110550.

It is an arithmetic number, because the mean of its divisors is an integer number (110511110550).

Almost surely, 2^221022221099 is an apocalyptic number.

221022221099 is a deficient number, since it is larger than the sum of its proper divisors (1).

221022221099 is an equidigital number, since it uses as much as digits as its factorization.

221022221099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 32.

The spelling of 221022221099 in words is "two hundred twenty-one billion, twenty-two million, two hundred twenty-one thousand, ninety-nine".