20001220022012 has 24 divisors (see below), whose sum is σ = 37062464211360. Its totient is φ = 9411988344320.

The previous prime is 20001220022009. The next prime is 20001220022051. The reversal of 20001220022012 is 21022002210002.

It is a super-3 number, since 3×20001220022012³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3632312 + ... + 7293567.

It is an arithmetic number, because the mean of its divisors is an integer number (1544269342140).

Almost surely, 2^{20001220022012} is an apocalyptic number.

It is an amenable number.

20001220022012 is a deficient number, since it is larger than the sum of its proper divisors (17061244189348).

20001220022012 is a wasteful number, since it uses less digits than its factorization.

20001220022012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10952821 (or 10952819 counting only the distinct ones).

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

Adding to 20001220022012 its reverse (21022002210002), we get a palindrome (41023222232014).

The spelling of 20001220022012 in words is "twenty trillion, one billion, two hundred twenty million, twenty-two thousand, twelve".