221111200101011 has 8 divisors (see below), whose sum is σ = 243205707700848. Its totient is φ = 201010181908800.

The previous prime is 221111200100993. The next prime is 221111200101023. The reversal of 221111200101011 is 110101002111122.

It is not a de Polignac number, because 221111200101011 - 2²⁶ = 221111132992147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221111200101041) 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 7 ways as a sum of consecutive naturals, for example, 83062057310 + ... + 83062059971.

It is an arithmetic number, because the mean of its divisors is an integer number (30400713462606).

Almost surely, 2^{221111200101011} is an apocalyptic number.

221111200101011 is a deficient number, since it is larger than the sum of its proper divisors (22094507599837).

221111200101011 is an equidigital number, since it uses as much as digits as its factorization.

221111200101011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166124117314 (or 166124117292 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 221111200101011 its reverse (110101002111122), we get a palindrome (331212202212133).

The spelling of 221111200101011 in words is "two hundred twenty-one trillion, one hundred eleven billion, two hundred million, one hundred one thousand, eleven".