11112212202221 has 8 divisors (see below), whose sum is σ = 11999605384704. Its totient is φ = 10229477252400.

The previous prime is 11112212202209. The next prime is 11112212202227. The reversal of 11112212202221 is 12220221221111.

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 11112212202221 - 2¹⁸ = 11112211940077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11112212202193 and 11112212202202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11112212202227) 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, 1164553205 + ... + 1164562746.

It is an arithmetic number, because the mean of its divisors is an integer number (1499950673088).

Almost surely, 2^{11112212202221} is an apocalyptic number.

It is an amenable number.

11112212202221 is a deficient number, since it is larger than the sum of its proper divisors (887393182483).

11112212202221 is a wasteful number, since it uses less digits than its factorization.

11112212202221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2329116331.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 11112212202221 its reverse (12220221221111), we get a palindrome (23332433423332).

The spelling of 11112212202221 in words is "eleven trillion, one hundred twelve billion, two hundred twelve million, two hundred two thousand, two hundred twenty-one".