2101212222222 has 64 divisors (see below), whose sum is σ = 4304009548800. Its totient is φ = 683560632960.

The previous prime is 2101212222209. The next prime is 2101212222233. The reversal of 2101212222222 is 2222222121012.

It is a congruent number.

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 in 31 ways as a sum of consecutive naturals, for example, 147747072 + ... + 147761292.

It is an arithmetic number, because the mean of its divisors is an integer number (67250149200).

Almost surely, 2^{2101212222222} is an apocalyptic number.

2101212222222 is an abundant number, since it is smaller than the sum of its proper divisors (2202797326578).

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

2101212222222 is a wasteful number, since it uses less digits than its factorization.

2101212222222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15721.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 2101212222222 its reverse (2222222121012), we get a palindrome (4323434343234).

The spelling of 2101212222222 in words is "two trillion, one hundred one billion, two hundred twelve million, two hundred twenty-two thousand, two hundred twenty-two".