20202021011212 has 24 divisors (see below), whose sum is σ = 37582707158640. Its totient is φ = 9474632049600.

The previous prime is 20202021011189. The next prime is 20202021011213. The reversal of 20202021011212 is 21211012020202.

It is a happy number.

It is a super-2 number, since 2×20202021011212² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20202021011213) by changing a digit.

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, 1315913443 + ... + 1315928794.

It is an arithmetic number, because the mean of its divisors is an integer number (1565946131610).

Almost surely, 2^{20202021011212} is an apocalyptic number.

It is an amenable number.

20202021011212 is a deficient number, since it is larger than the sum of its proper divisors (17380686147428).

20202021011212 is a wasteful number, since it uses less digits than its factorization.

20202021011212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2631842361 (or 2631842359 counting only the distinct ones).

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

Adding to 20202021011212 its reverse (21211012020202), we get a palindrome (41413033031414).

The spelling of 20202021011212 in words is "twenty trillion, two hundred two billion, twenty-one million, eleven thousand, two hundred twelve".