11121220221102 has 64 divisors (see below), whose sum is σ = 26049564864000. Its totient is φ = 3507237304704.

The previous prime is 11121220221101. The next prime is 11121220221109. The reversal of 11121220221102 is 20112202212111.

11121220221102 is a `hidden beast` number, since 1 + 1 + 121 + 220 + 221 + 102 = 666.

11121220221102 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121220221101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6532027 + ... + 8056662.

It is an arithmetic number, because the mean of its divisors is an integer number (407024451000).

Almost surely, 2^{11121220221102} is an apocalyptic number.

11121220221102 is an abundant number, since it is smaller than the sum of its proper divisors (14928344642898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11121220221102 is a wasteful number, since it uses less digits than its factorization.

11121220221102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14589462 (or 14589456 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 11121220221102 its reverse (20112202212111), we get a palindrome (31233422433213).

The spelling of 11121220221102 in words is "eleven trillion, one hundred twenty-one billion, two hundred twenty million, two hundred twenty-one thousand, one hundred two".