10111200020221 has 2 divisors, whose sum is σ = 10111200020222. Its totient is φ = 10111200020220.

The previous prime is 10111200020219. The next prime is 10111200020237. The reversal of 10111200020221 is 12202000211101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9136805971225 + 974394048996 = 3022715^2 + 987114^2 .

It is a cyclic number.

It is not a de Polignac number, because 10111200020221 - 2¹ = 10111200020219 is a prime.

It is a super-3 number, since 3×10111200020221³ (a number of 40 digits) contains 333 as substring.

Together with 10111200020219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10111200080221) 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, 5055600010110 + 5055600010111.

It is an arithmetic number, because the mean of its divisors is an integer number (5055600010111).

Almost surely, 2^{10111200020221} is an apocalyptic number.

It is an amenable number.

10111200020221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10111200020221 is an equidigital number, since it uses as much as digits as its factorization.

10111200020221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 10111200020221 its reverse (12202000211101), we get a palindrome (22313200231322).

The spelling of 10111200020221 in words is "ten trillion, one hundred eleven billion, two hundred million, twenty thousand, two hundred twenty-one".