20001022202012 has 12 divisors (see below), whose sum is σ = 35444849472480. Its totient is φ = 9873922352736.

The previous prime is 20001022201991. The next prime is 20001022202023. The reversal of 20001022202012 is 21020222010002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31647186713 + ... + 31647187344.

It is an arithmetic number, because the mean of its divisors is an integer number (2953737456040).

Almost surely, 2^{20001022202012} is an apocalyptic number.

It is an amenable number.

20001022202012 is a deficient number, since it is larger than the sum of its proper divisors (15443827270468).

20001022202012 is a wasteful number, since it uses less digits than its factorization.

20001022202012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63294374140 (or 63294374138 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20001022202012 its reverse (21020222010002), we get a palindrome (41021244212014).

The spelling of 20001022202012 in words is "twenty trillion, one billion, twenty-two million, two hundred two thousand, twelve".