20021202011212 has 6 divisors (see below), whose sum is σ = 35037103519628. Its totient is φ = 10010601005604.

The previous prime is 20021202011203. The next prime is 20021202011219. The reversal of 20021202011212 is 21211020212002.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20021202011219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2502650251398 + ... + 2502650251405.

Almost surely, 2^{20021202011212} is an apocalyptic number.

It is an amenable number.

20021202011212 is a deficient number, since it is larger than the sum of its proper divisors (15015901508416).

20021202011212 is a wasteful number, since it uses less digits than its factorization.

20021202011212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5005300502807 (or 5005300502805 counting only the distinct ones).

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

Adding to 20021202011212 its reverse (21211020212002), we get a palindrome (41232222223214).

The spelling of 20021202011212 in words is "twenty trillion, twenty-one billion, two hundred two million, eleven thousand, two hundred twelve".