11021110120221 has 12 divisors (see below), whose sum is σ = 14777366177952. Its totient is φ = 7306359718024.

The previous prime is 11021110120199. The next prime is 11021110120243. The reversal of 11021110120221 is 12202101112011.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11021110120199) and next prime (11021110120243).

It is not a de Polignac number, because 11021110120221 - 2⁷ = 11021110120093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11021110120221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11021110120121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57232041 + ... + 57424286.

It is an arithmetic number, because the mean of its divisors is an integer number (1231447181496).

Almost surely, 2^{11021110120221} is an apocalyptic number.

It is an amenable number.

11021110120221 is a deficient number, since it is larger than the sum of its proper divisors (3756256057731).

11021110120221 is an equidigital number, since it uses as much as digits as its factorization.

11021110120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114656688 (or 114656509 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11021110120221 its reverse (12202101112011), we get a palindrome (23223211232232).

The spelling of 11021110120221 in words is "eleven trillion, twenty-one billion, one hundred ten million, one hundred twenty thousand, two hundred twenty-one".