2211100131222 has 192 divisors, whose sum is σ = 5187404716416. Its totient is φ = 678853232640.

The previous prime is 2211100131203. The next prime is 2211100131257. The reversal of 2211100131222 is 2221310011122.

2211100131222 is a `hidden beast` number, since 2 + 211 + 100 + 131 + 222 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 2211100131195 and 2211100131204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 617451472 + ... + 617455052.

It is an arithmetic number, because the mean of its divisors is an integer number (27017732898).

Almost surely, 2^{2211100131222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2211100131222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2593702358208).

2211100131222 is an abundant number, since it is smaller than the sum of its proper divisors (2976304585194).

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

2211100131222 is a wasteful number, since it uses less digits than its factorization.

2211100131222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4055 (or 4052 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 2211100131222 its reverse (2221310011122), we get a palindrome (4432410142344).

The spelling of 2211100131222 in words is "two trillion, two hundred eleven billion, one hundred million, one hundred thirty-one thousand, two hundred twenty-two".