111210120221201 has 4 divisors (see below), whose sum is σ = 113308424376372. Its totient is φ = 109111816066032.

The previous prime is 111210120221149. The next prime is 111210120221209. The reversal of 111210120221201 is 102122021012111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 101863501635025 + 9346618586176 = 10092745^2 + 3057224^2 .

It is a cyclic number.

It is not a de Polignac number, because 111210120221201 - 2¹⁴ = 111210120204817 is a prime.

It is a super-2 number, since 2×111210120221201² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111210120221201.

It is not an unprimeable number, because it can be changed into a prime (111210120221209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1049152077506 + ... + 1049152077611.

It is an arithmetic number, because the mean of its divisors is an integer number (28327106094093).

Almost surely, 2^{111210120221201} is an apocalyptic number.

It is an amenable number.

111210120221201 is a deficient number, since it is larger than the sum of its proper divisors (2098304155171).

111210120221201 is an equidigital number, since it uses as much as digits as its factorization.

111210120221201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2098304155170.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 111210120221201 its reverse (102122021012111), we get a palindrome (213332141233312).

The spelling of 111210120221201 in words is "one hundred eleven trillion, two hundred ten billion, one hundred twenty million, two hundred twenty-one thousand, two hundred one".