111001202211221 has 8 divisors (see below), whose sum is σ = 134320782507840. Its totient is φ = 89547188338368.

The previous prime is 111001202211197. The next prime is 111001202211233. The reversal of 111001202211221 is 122112202100111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111001202211221 - 2²⁶ = 111001135102357 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

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 111001202211221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111001202211241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 466391605811 + ... + 466391606048.

It is an arithmetic number, because the mean of its divisors is an integer number (16790097813480).

Almost surely, 2^{111001202211221} is an apocalyptic number.

It is an amenable number.

111001202211221 is a deficient number, since it is larger than the sum of its proper divisors (23319580296619).

111001202211221 is an equidigital number, since it uses as much as digits as its factorization.

111001202211221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932783211883.

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

Adding to 111001202211221 its reverse (122112202100111), we get a palindrome (233113404311332).

The spelling of 111001202211221 in words is "one hundred eleven trillion, one billion, two hundred two million, two hundred eleven thousand, two hundred twenty-one".