11102020221 has 32 divisors (see below), whose sum is σ = 16152369408. Its totient is φ = 6755164160.

The previous prime is 11102020219. The next prime is 11102020229. The reversal of 11102020221 is 12202020111.

It is a cyclic number.

It is not a de Polignac number, because 11102020221 - 2¹ = 11102020219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11102020197 and 11102020206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11102020229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 333301 + ... + 365093.

It is an arithmetic number, because the mean of its divisors is an integer number (504761544).

Almost surely, 2^11102020221 is an apocalyptic number.

It is an amenable number.

11102020221 is a deficient number, since it is larger than the sum of its proper divisors (5050349187).

11102020221 is a wasteful number, since it uses less digits than its factorization.

11102020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32021.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 11102020221 its reverse (12202020111), we get a palindrome (23304040332).

The spelling of 11102020221 in words is "eleven billion, one hundred two million, twenty thousand, two hundred twenty-one".