11012202222221 has 4 divisors (see below), whose sum is σ = 11012504932992. Its totient is φ = 11011899511452.

The previous prime is 11012202222193. The next prime is 11012202222239. The reversal of 11012202222221 is 12222220221011.

11012202222221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is not a de Polignac number, because 11012202222221 - 2⁴² = 6614155711117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11012202222193 and 11012202222202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11012202222251) 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, 151300811 + ... + 151373576.

It is an arithmetic number, because the mean of its divisors is an integer number (2753126233248).

Almost surely, 2^{11012202222221} is an apocalyptic number.

It is an amenable number.

11012202222221 is a deficient number, since it is larger than the sum of its proper divisors (302710771).

11012202222221 is an equidigital number, since it uses as much as digits as its factorization.

11012202222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302710770.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 11012202222221 its reverse (12222220221011), we get a palindrome (23234422443232).

The spelling of 11012202222221 in words is "eleven trillion, twelve billion, two hundred two million, two hundred twenty-two thousand, two hundred twenty-one".