1111101202221 has 4 divisors (see below), whose sum is σ = 1481468269632. Its totient is φ = 740734134812.

The previous prime is 1111101202207. The next prime is 1111101202241. The reversal of 1111101202221 is 1222021011111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1111101202221 - 2⁹ = 1111101201709 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1111101202221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111101202201) 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, 185183533701 + ... + 185183533706.

It is an arithmetic number, because the mean of its divisors is an integer number (370367067408).

Almost surely, 2^{1111101202221} is an apocalyptic number.

It is an amenable number.

1111101202221 is a deficient number, since it is larger than the sum of its proper divisors (370367067411).

1111101202221 is an equidigital number, since it uses as much as digits as its factorization.

1111101202221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370367067410.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1111101202221 its reverse (1222021011111), we get a palindrome (2333122213332).

The spelling of 1111101202221 in words is "one trillion, one hundred eleven billion, one hundred one million, two hundred two thousand, two hundred twenty-one".