11122102212221 has 24 divisors (see below), whose sum is σ = 15046302308352. Its totient is φ = 7999913671200.

The previous prime is 11122102212209. The next prime is 11122102212281. The reversal of 11122102212221 is 12221220122111.

It is not a de Polignac number, because 11122102212221 - 2⁶ = 11122102212157 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11122102212193 and 11122102212202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11122102212281) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 505034045 + ... + 505056066.

It is an arithmetic number, because the mean of its divisors is an integer number (626929262848).

Almost surely, 2^{11122102212221} is an apocalyptic number.

11122102212221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11122102212221 is a deficient number, since it is larger than the sum of its proper divisors (3924200096131).

11122102212221 is a wasteful number, since it uses less digits than its factorization.

11122102212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010090153 (or 1010090142 counting only the distinct ones).

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

Adding to 11122102212221 its reverse (12221220122111), we get a palindrome (23343322334332).

The spelling of 11122102212221 in words is "eleven trillion, one hundred twenty-two billion, one hundred two million, two hundred twelve thousand, two hundred twenty-one".