11101202222221 has 8 divisors (see below), whose sum is σ = 11459584553984. Its totient is φ = 10742837330160.

The previous prime is 11101202222219. The next prime is 11101202222273. The reversal of 11101202222221 is 12222220210111.

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 11101202222221 - 2¹ = 11101202222219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11101202222291) 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, 3060126 + ... + 5618431.

It is an arithmetic number, because the mean of its divisors is an integer number (1432448069248).

Almost surely, 2^{11101202222221} is an apocalyptic number.

It is an amenable number.

11101202222221 is a deficient number, since it is larger than the sum of its proper divisors (358382331763).

11101202222221 is an equidigital number, since it uses as much as digits as its factorization.

11101202222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8719851.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 11101202222221 its reverse (12222220210111), we get a palindrome (23323422432332).

The spelling of 11101202222221 in words is "eleven trillion, one hundred one billion, two hundred two million, two hundred twenty-two thousand, two hundred twenty-one".