11212221121011 has 24 divisors (see below), whose sum is σ = 17151573216960. Its totient is φ = 7033695411456.

The previous prime is 11212221120983. The next prime is 11212221121019. The reversal of 11212221121011 is 11012112221211.

It is a happy number.

11212221121011 is a `hidden beast` number, since 11 + 212 + 221 + 1 + 210 + 11 = 666.

It is not a de Polignac number, because 11212221121011 - 2³⁴ = 11195041251827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11212221121019) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6656476 + ... + 8169033.

It is an arithmetic number, because the mean of its divisors is an integer number (714648884040).

Almost surely, 2^{11212221121011} is an apocalyptic number.

11212221121011 is a deficient number, since it is larger than the sum of its proper divisors (5939352095949).

11212221121011 is a wasteful number, since it uses less digits than its factorization.

11212221121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14830475 (or 14830472 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 11212221121011 its reverse (11012112221211), we get a palindrome (22224333342222).

The spelling of 11212221121011 in words is "eleven trillion, two hundred twelve billion, two hundred twenty-one million, one hundred twenty-one thousand, eleven".