2101122212212 has 12 divisors (see below), whose sum is σ = 3678689350336. Its totient is φ = 1050068112120.

The previous prime is 2101122212209. The next prime is 2101122212213. The reversal of 2101122212212 is 2122122211012.

It is a self number, because there is not a number n which added to its sum of digits gives 2101122212212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101122212213) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 123238908 + ... + 123255955.

Almost surely, 2^{2101122212212} is an apocalyptic number.

It is an amenable number.

2101122212212 is a deficient number, since it is larger than the sum of its proper divisors (1577567138124).

2101122212212 is a wasteful number, since it uses less digits than its factorization.

2101122212212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246496998 (or 246496996 counting only the distinct ones).

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

Adding to 2101122212212 its reverse (2122122211012), we get a palindrome (4223244423224).

The spelling of 2101122212212 in words is "two trillion, one hundred one billion, one hundred twenty-two million, two hundred twelve thousand, two hundred twelve".