11221211102021 has 16 divisors (see below), whose sum is σ = 11518611511680. Its totient is φ = 10927520809920.

The previous prime is 11221211101979. The next prime is 11221211102051. The reversal of 11221211102021 is 12020111212211.

It is a cyclic number.

It is not a de Polignac number, because 11221211102021 - 2⁶ = 11221211101957 is a prime.

It is a super-2 number, since 2×11221211102021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221211102051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26701595 + ... + 27118583.

It is an arithmetic number, because the mean of its divisors is an integer number (719913219480).

Almost surely, 2^{11221211102021} is an apocalyptic number.

It is an amenable number.

11221211102021 is a deficient number, since it is larger than the sum of its proper divisors (297400409659).

11221211102021 is a wasteful number, since it uses less digits than its factorization.

11221211102021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421436.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11221211102021 its reverse (12020111212211), we get a palindrome (23241322314232).

The spelling of 11221211102021 in words is "eleven trillion, two hundred twenty-one billion, two hundred eleven million, one hundred two thousand, twenty-one".