20010100200012 has 144 divisors (see below), whose sum is σ = 55569853116960. Its totient is φ = 6033931398144.

The previous prime is 20010100199989. The next prime is 20010100200023. The reversal of 20010100200012 is 21000200101002.

It is a super-2 number, since 2×20010100200012² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 20010100199967 and 20010100200003.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3498439 + ... + 7229057.

Almost surely, 2^{20010100200012} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20010100200012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27784926558480).

20010100200012 is an abundant number, since it is smaller than the sum of its proper divisors (35559752916948).

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

20010100200012 is a wasteful number, since it uses less digits than its factorization.

20010100200012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3730872 (or 3730867 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 20010100200012 its reverse (21000200101002), we get a palindrome (41010300301014).

The spelling of 20010100200012 in words is "twenty trillion, ten billion, one hundred million, two hundred thousand, twelve".