221012211202111 has 32 divisors (see below), whose sum is σ = 261447379200000. Its totient is φ = 186722423256096.

The previous prime is 221012211202049. The next prime is 221012211202169. The reversal of 221012211202111 is 111202112210122.

It is a happy number.

221012211202111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 221012211202111 - 2⁴¹ = 218813187946559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221012211202411) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8958465 + ... + 22853413.

It is an arithmetic number, because the mean of its divisors is an integer number (8170230600000).

Almost surely, 2^{221012211202111} is an apocalyptic number.

221012211202111 is a deficient number, since it is larger than the sum of its proper divisors (40435167997889).

221012211202111 is an equidigital number, since it uses as much as digits as its factorization.

221012211202111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13895636 (or 13895622 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 221012211202111 its reverse (111202112210122), we get a palindrome (332214323412233).

The spelling of 221012211202111 in words is "two hundred twenty-one trillion, twelve billion, two hundred eleven million, two hundred two thousand, one hundred eleven".