2100012212222 has 16 divisors (see below), whose sum is σ = 3315846917760. Its totient is φ = 994731178392.

The previous prime is 2100012212219. The next prime is 2100012212281. The reversal of 2100012212222 is 2222122100012.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2100012212222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3679943 + ... + 4212125.

It is an arithmetic number, because the mean of its divisors is an integer number (207240432360).

Almost surely, 2^{2100012212222} is an apocalyptic number.

2100012212222 is a deficient number, since it is larger than the sum of its proper divisors (1215834705538).

2100012212222 is a wasteful number, since it uses less digits than its factorization.

2100012212222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636047.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2100012212222 its reverse (2222122100012), we get a palindrome (4322134312234).

The spelling of 2100012212222 in words is "two trillion, one hundred billion, twelve million, two hundred twelve thousand, two hundred twenty-two".