11221022121211 has 8 divisors (see below), whose sum is σ = 13136806386144. Its totient is φ = 9383433132480.

The previous prime is 11221022121187. The next prime is 11221022121251. The reversal of 11221022121211 is 11212122012211.

It is a happy number.

11221022121211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 11221022121211 - 2¹⁵ = 11221022088443 is a prime.

It is a super-2 number, since 2×11221022121211² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11221022121251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19548818740 + ... + 19548819313.

It is an arithmetic number, because the mean of its divisors is an integer number (1642100798268).

Almost surely, 2^{11221022121211} is an apocalyptic number.

11221022121211 is a deficient number, since it is larger than the sum of its proper divisors (1915784264933).

11221022121211 is an equidigital number, since it uses as much as digits as its factorization.

11221022121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39097638101.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 11221022121211 its reverse (11212122012211), we get a palindrome (22433144133422).

The spelling of 11221022121211 in words is "eleven trillion, two hundred twenty-one billion, twenty-two million, one hundred twenty-one thousand, two hundred eleven".