20001202122012 has 48 divisors (see below), whose sum is σ = 48204013519872. Its totient is φ = 6448106701440.

The previous prime is 20001202121963. The next prime is 20001202122047. The reversal of 20001202122012 is 21022120210002.

It is a junction number, because it is equal to n+sod(n) for n = 20001202121982 and 20001202122000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15607698 + ... + 16840505.

It is an arithmetic number, because the mean of its divisors is an integer number (1004250281664).

Almost surely, 2^{20001202122012} is an apocalyptic number.

It is an amenable number.

20001202122012 is an abundant number, since it is smaller than the sum of its proper divisors (28202811397860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20001202122012 is a wasteful number, since it uses less digits than its factorization.

20001202122012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32449898 (or 32449896 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20001202122012 its reverse (21022120210002), we get a palindrome (41023322332014).

The spelling of 20001202122012 in words is "twenty trillion, one billion, two hundred two million, one hundred twenty-two thousand, twelve".