2211002212122 has 48 divisors (see below), whose sum is σ = 5230769648832. Its totient is φ = 669389847360.

The previous prime is 2211002212109. The next prime is 2211002212189. The reversal of 2211002212122 is 2212122001122.

It is a happy number.

2211002212122 is a `hidden beast` number, since 221 + 10 + 0 + 221 + 212 + 2 = 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 = 2211002212095 and 2211002212104.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4872438 + ... + 5306849.

It is an arithmetic number, because the mean of its divisors is an integer number (108974367684).

Almost surely, 2^{2211002212122} is an apocalyptic number.

2211002212122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2211002212122 is an abundant number, since it is smaller than the sum of its proper divisors (3019767436710).

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

2211002212122 is a wasteful number, since it uses less digits than its factorization.

2211002212122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10180403 (or 10180400 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2211002212122 its reverse (2212122001122), we get a palindrome (4423124213244).

The spelling of 2211002212122 in words is "two trillion, two hundred eleven billion, two million, two hundred twelve thousand, one hundred twenty-two".