2101122222212 has 36 divisors (see below), whose sum is σ = 4206438889380. Its totient is φ = 912704669184.

The previous prime is 2101122222211. The next prime is 2101122222233. The reversal of 2101122222212 is 2122222211012.

It can be written as a sum of positive squares in 6 ways, for example, as 236297098816 + 1864825123396 = 486104^2 + 1365586^2 .

It is not an unprimeable number, because it can be changed into a prime (2101122222211) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 69891887 + ... + 69921942.

It is an arithmetic number, because the mean of its divisors is an integer number (116845524705).

Almost surely, 2^{2101122222212} is an apocalyptic number.

It is an amenable number.

2101122222212 is an abundant number, since it is smaller than the sum of its proper divisors (2105316667168).

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

2101122222212 is a wasteful number, since it uses less digits than its factorization.

2101122222212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139813880 (or 139813861 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 2101122222212 its reverse (2122222211012), we get a palindrome (4223344433224).

The spelling of 2101122222212 in words is "two trillion, one hundred one billion, one hundred twenty-two million, two hundred twenty-two thousand, two hundred twelve".