20202121220012 has 24 divisors (see below), whose sum is σ = 35462196711312. Its totient is φ = 10070067902400.

The previous prime is 20202121220003. The next prime is 20202121220027. The reversal of 20202121220012 is 21002212120202.

It is a happy 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 7 ways as a sum of consecutive naturals, for example, 28541378 + ... + 29240630.

It is an arithmetic number, because the mean of its divisors is an integer number (1477591529638).

Almost surely, 2^{20202121220012} is an apocalyptic number.

It is an amenable number.

20202121220012 is a deficient number, since it is larger than the sum of its proper divisors (15260075491300).

20202121220012 is a wasteful number, since it uses less digits than its factorization.

20202121220012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721409 (or 721407 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20202121220012 its reverse (21002212120202), we get a palindrome (41204333340214).

The spelling of 20202121220012 in words is "twenty trillion, two hundred two billion, one hundred twenty-one million, two hundred twenty thousand, twelve".