111211010221201 has 16 divisors (see below), whose sum is σ = 122606976187008. Its totient is φ = 100030740192000.

The previous prime is 111211010221177. The next prime is 111211010221217. The reversal of 111211010221201 is 102122010112111.

It is a cyclic number.

It is not a de Polignac number, because 111211010221201 - 2¹⁵ = 111211010188433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111211010227201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32981160 + ... + 36196393.

It is an arithmetic number, because the mean of its divisors is an integer number (7662936011688).

Almost surely, 2^{111211010221201} is an apocalyptic number.

111211010221201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111211010221201 is a deficient number, since it is larger than the sum of its proper divisors (11395965965807).

111211010221201 is a wasteful number, since it uses less digits than its factorization.

111211010221201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69179112.

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

Adding to 111211010221201 its reverse (102122010112111), we get a palindrome (213333020333312).

It can be divided in two parts, 1112110 and 10221201, that added together give a palindrome (11333311).

The spelling of 111211010221201 in words is "one hundred eleven trillion, two hundred eleven billion, ten million, two hundred twenty-one thousand, two hundred one".