11102222112021 has 6 divisors (see below), whose sum is σ = 16036543050710. Its totient is φ = 7401481408008.

The previous prime is 11102222112017. The next prime is 11102222112043. The reversal of 11102222112021 is 12021122220111.

It can be written as a sum of positive squares in only one way, i.e., 6490418616900 + 4611803495121 = 2547630^2 + 2147511^2 .

It is not a de Polignac number, because 11102222112021 - 2² = 11102222112017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11102222111985 and 11102222112003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11102222512021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 616790117326 + ... + 616790117343.

Almost surely, 2^{11102222112021} is an apocalyptic number.

It is an amenable number.

11102222112021 is a deficient number, since it is larger than the sum of its proper divisors (4934320938689).

11102222112021 is a wasteful number, since it uses less digits than its factorization.

11102222112021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1233580234675 (or 1233580234672 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 11102222112021 its reverse (12021122220111), we get a palindrome (23123344332132).

The spelling of 11102222112021 in words is "eleven trillion, one hundred two billion, two hundred twenty-two million, one hundred twelve thousand, twenty-one".