20020100100012 has 72 divisors (see below), whose sum is σ = 54403258291200. Its totient is φ = 6187623313248.

The previous prime is 20020100099999. The next prime is 20020100100017. The reversal of 20020100100012 is 21000100102002.

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 = 20020100099967 and 20020100100003.

It is not an unprimeable number, because it can be changed into a prime (20020100100017) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 311341812 + ... + 311406107.

It is an arithmetic number, because the mean of its divisors is an integer number (755600809600).

Almost surely, 2^{20020100100012} is an apocalyptic number.

It is an amenable number.

20020100100012 is an abundant number, since it is smaller than the sum of its proper divisors (34383158191188).

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

20020100100012 is a wasteful number, since it uses less digits than its factorization.

20020100100012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622747995 (or 622747990 counting only the distinct ones).

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

Adding to 20020100100012 its reverse (21000100102002), we get a palindrome (41020200202014).

The spelling of 20020100100012 in words is "twenty trillion, twenty billion, one hundred million, one hundred thousand, twelve".