2100001111122 has 64 divisors (see below), whose sum is σ = 4492880887680. Its totient is φ = 653212944384.

The previous prime is 2100001111099. The next prime is 2100001111211. The reversal of 2100001111122 is 2211111000012.

It is a junction number, because it is equal to n+sod(n) for n = 2100001111098 and 2100001111107.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1081503 + ... + 2317250.

It is an arithmetic number, because the mean of its divisors is an integer number (70201263870).

Almost surely, 2^{2100001111122} is an apocalyptic number.

2100001111122 is an abundant number, since it is smaller than the sum of its proper divisors (2392879776558).

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

2100001111122 is a wasteful number, since it uses less digits than its factorization.

2100001111122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3398907.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 2100001111122 its reverse (2211111000012), we get a palindrome (4311112111134).

The spelling of 2100001111122 in words is "two trillion, one hundred billion, one million, one hundred eleven thousand, one hundred twenty-two".