20010100012 has 24 divisors (see below), whose sum is σ = 40836941600. Its totient is φ = 8575756560.

The previous prime is 20010100001. The next prime is 20010100013. The reversal of 20010100012 is 21000101002.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is a junction number, because it is equal to n+sod(n) for n = 20010099968 and 20010100004.

It is not an unprimeable number, because it can be changed into a prime (20010100013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7290939 + ... + 7293682.

Almost surely, 2^20010100012 is an apocalyptic number.

It is an amenable number.

20010100012 is an abundant number, since it is smaller than the sum of its proper divisors (20826841588).

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

20010100012 is a wasteful number, since it uses less digits than its factorization.

20010100012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14584646 (or 14584630 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 20010100012 its reverse (21000101002), we get a palindrome (41010201014).

The spelling of 20010100012 in words is "twenty billion, ten million, one hundred thousand, twelve".