11221221211022 has 8 divisors (see below), whose sum is σ = 16831894341672. Its totient is φ = 5610589763800.

The previous prime is 11221221210943. The next prime is 11221221211033. The reversal of 11221221211022 is 22011212212211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 11221221210985 and 11221221211003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9738929 + ... + 10830012.

It is an arithmetic number, because the mean of its divisors is an integer number (2103986792709).

Almost surely, 2^{11221221211022} is an apocalyptic number.

11221221211022 is a deficient number, since it is larger than the sum of its proper divisors (5610673130650).

11221221211022 is a wasteful number, since it uses less digits than its factorization.

11221221211022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20841714.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 11221221211022 its reverse (22011212212211), we get a palindrome (33232433423233).

The spelling of 11221221211022 in words is "eleven trillion, two hundred twenty-one billion, two hundred twenty-one million, two hundred eleven thousand, twenty-two".