2101222212112 has 10 divisors (see below), whose sum is σ = 4071118035998. Its totient is φ = 1050611106048.

The previous prime is 2101222212097. The next prime is 2101222212139. The reversal of 2101222212112 is 2112122221012.

It can be written as a sum of positive squares in only one way, i.e., 1970811668736 + 130410543376 = 1403856^2 + 361124^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2101222212112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65663194113 + ... + 65663194144.

Almost surely, 2^{2101222212112} is an apocalyptic number.

It is an amenable number.

2101222212112 is a deficient number, since it is larger than the sum of its proper divisors (1969895823886).

2101222212112 is a wasteful number, since it uses less digits than its factorization.

2101222212112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131326388265 (or 131326388259 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 2101222212112 its reverse (2112122221012), we get a palindrome (4213344433124).

The spelling of 2101222212112 in words is "two trillion, one hundred one billion, two hundred twenty-two million, two hundred twelve thousand, one hundred twelve".