111010201202221 has 4 divisors (see below), whose sum is σ = 113717767085244. Its totient is φ = 108302635319200.

The previous prime is 111010201202143. The next prime is 111010201202249. The reversal of 111010201202221 is 122202102010111.

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 46431072981225 + 64579128220996 = 6814035^2 + 8036114^2 .

It is a cyclic number.

It is not a de Polignac number, because 111010201202221 - 2⁷ = 111010201202093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111010201202195 and 111010201202204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111010201202291) 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, 1353782941450 + ... + 1353782941531.

It is an arithmetic number, because the mean of its divisors is an integer number (28429441771311).

Almost surely, 2^{111010201202221} is an apocalyptic number.

It is an amenable number.

111010201202221 is a deficient number, since it is larger than the sum of its proper divisors (2707565883023).

111010201202221 is an equidigital number, since it uses as much as digits as its factorization.

111010201202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2707565883022.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 111010201202221 its reverse (122202102010111), we get a palindrome (233212303212332).

The spelling of 111010201202221 in words is "one hundred eleven trillion, ten billion, two hundred one million, two hundred two thousand, two hundred twenty-one".