20012210021212 has 48 divisors (see below), whose sum is σ = 36341290782720. Its totient is φ = 9631169150400.

The previous prime is 20012210021159. The next prime is 20012210021233. The reversal of 20012210021212 is 21212001221002.

It is a happy number.

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 15 ways as a sum of consecutive naturals, for example, 48449037 + ... + 48860347.

It is an arithmetic number, because the mean of its divisors is an integer number (757110224640).

Almost surely, 2^{20012210021212} is an apocalyptic number.

It is an amenable number.

20012210021212 is a deficient number, since it is larger than the sum of its proper divisors (16329080761508).

20012210021212 is a wasteful number, since it uses less digits than its factorization.

20012210021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412642 (or 412640 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20012210021212 its reverse (21212001221002), we get a palindrome (41224211242214).

The spelling of 20012210021212 in words is "twenty trillion, twelve billion, two hundred ten million, twenty-one thousand, two hundred twelve".