12211211031102 has 160 divisors (see below), whose sum is σ = 28394858162880. Its totient is φ = 3920117160960.

The previous prime is 12211211031077. The next prime is 12211211031169. The reversal of 12211211031102 is 20113011211221.

It is a happy number.

12211211031102 is a `hidden beast` number, since 1 + 221 + 121 + 10 + 311 + 0 + 2 = 666.

12211211031102 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12211211031102² (a number of 27 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 139556038 + ... + 139643510.

It is an arithmetic number, because the mean of its divisors is an integer number (177467863518).

Almost surely, 2^{12211211031102} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12211211031102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14197429081440).

12211211031102 is an abundant number, since it is smaller than the sum of its proper divisors (16183647131778).

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

12211211031102 is a wasteful number, since it uses less digits than its factorization.

12211211031102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87840 (or 87831 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 12211211031102 its reverse (20113011211221), we get a palindrome (32324222242323).

The spelling of 12211211031102 in words is "twelve trillion, two hundred eleven billion, two hundred eleven million, thirty-one thousand, one hundred two".