20202210021212 has 12 divisors (see below), whose sum is σ = 36890992212816. Its totient is φ = 9661926531840.

The previous prime is 20202210021211. The next prime is 20202210021221. The reversal of 20202210021212 is 21212001220202.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20202210021211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109794619589 + ... + 109794619772.

It is an arithmetic number, because the mean of its divisors is an integer number (3074249351068).

Almost surely, 2^{20202210021212} is an apocalyptic number.

It is an amenable number.

20202210021212 is a deficient number, since it is larger than the sum of its proper divisors (16688782191604).

20202210021212 is a wasteful number, since it uses less digits than its factorization.

20202210021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219589239388 (or 219589239386 counting only the distinct ones).

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

Adding to 20202210021212 its reverse (21212001220202), we get a palindrome (41414211241414).

The spelling of 20202210021212 in words is "twenty trillion, two hundred two billion, two hundred ten million, twenty-one thousand, two hundred twelve".