221101022201 has 2 divisors, whose sum is σ = 221101022202. Its totient is φ = 221101022200.

The previous prime is 221101022161. The next prime is 221101022221. The reversal of 221101022201 is 102220101122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 208140338176 + 12960684025 = 456224^2 + 113845^2 .

It is a cyclic number.

It is not a de Polignac number, because 221101022201 - 2¹⁰ = 221101021177 is a prime.

It is not a weakly prime, because it can be changed into another prime (221101022221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110550511100 + 110550511101.

It is an arithmetic number, because the mean of its divisors is an integer number (110550511101).

Almost surely, 2^221101022201 is an apocalyptic number.

It is an amenable number.

221101022201 is a deficient number, since it is larger than the sum of its proper divisors (1).

221101022201 is an equidigital number, since it uses as much as digits as its factorization.

221101022201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 221101022201 its reverse (102220101122), we get a palindrome (323321123323).

The spelling of 221101022201 in words is "two hundred twenty-one billion, one hundred one million, twenty-two thousand, two hundred one".