212001221212112 has 20 divisors (see below), whose sum is σ = 410752739087460. Its totient is φ = 106000514350848.

The previous prime is 212001221212091. The next prime is 212001221212133. The reversal of 212001221212112 is 211212122100212.

It is an interprime number because it is at equal distance from previous prime (212001221212091) and next prime (212001221212133).

It can be written as a sum of positive squares in 2 ways, for example, as 104699881431616 + 107301339780496 = 10232296^2 + 10358636^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14216564 + ... + 25022252.

It is an arithmetic number, because the mean of its divisors is an integer number (20537636954373).

Almost surely, 2^{212001221212112} is an apocalyptic number.

It is an amenable number.

212001221212112 is a deficient number, since it is larger than the sum of its proper divisors (198751517875348).

212001221212112 is a wasteful number, since it uses less digits than its factorization.

212001221212112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12031910 (or 12031904 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 212001221212112 its reverse (211212122100212), we get a palindrome (423213343312324).

The spelling of 212001221212112 in words is "two hundred twelve trillion, one billion, two hundred twenty-one million, two hundred twelve thousand, one hundred twelve".