2111212121122 has 16 divisors (see below), whose sum is σ = 3436453323072. Its totient is φ = 966967382160.

The previous prime is 2111212121087. The next prime is 2111212121147. The reversal of 2111212121122 is 2211212121112.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 2111212121122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309922038 + ... + 309928849.

It is an arithmetic number, because the mean of its divisors is an integer number (214778332692).

Almost surely, 2^{2111212121122} is an apocalyptic number.

2111212121122 is a deficient number, since it is larger than the sum of its proper divisors (1325241201950).

2111212121122 is a wasteful number, since it uses less digits than its factorization.

2111212121122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619851033.

The product of its digits is 64, while the sum is 19.

Adding to 2111212121122 its reverse (2211212121112), we get a palindrome (4322424242234).

The spelling of 2111212121122 in words is "two trillion, one hundred eleven billion, two hundred twelve million, one hundred twenty-one thousand, one hundred twenty-two".