11020102120221 has 4 divisors (see below), whose sum is σ = 14693469493632. Its totient is φ = 7346734746812.

The previous prime is 11020102120199. The next prime is 11020102120243. The reversal of 11020102120221 is 12202120102011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (11020102120199) and next prime (11020102120243).

It is a cyclic number.

It is not a de Polignac number, because 11020102120221 - 2⁹ = 11020102119709 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11020102120221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11020102121221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1836683686701 + ... + 1836683686706.

It is an arithmetic number, because the mean of its divisors is an integer number (3673367373408).

Almost surely, 2^{11020102120221} is an apocalyptic number.

It is an amenable number.

11020102120221 is a deficient number, since it is larger than the sum of its proper divisors (3673367373411).

11020102120221 is an equidigital number, since it uses as much as digits as its factorization.

11020102120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3673367373410.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 11020102120221 its reverse (12202120102011), we get a palindrome (23222222222232).

The spelling of 11020102120221 in words is "eleven trillion, twenty billion, one hundred two million, one hundred twenty thousand, two hundred twenty-one".