20010002100012 has 36 divisors (see below), whose sum is σ = 50632930222056. Its totient is φ = 6663131480640.

The previous prime is 20010002099963. The next prime is 20010002100019. The reversal of 20010002100012 is 21000120001002.

It is a tau number, because it is divible by the number of its divisors (36).

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 = 20010002099967 and 20010002100003.

It is not an unprimeable number, because it can be changed into a prime (20010002100019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 286182033 + ... + 286251944.

It is an arithmetic number, because the mean of its divisors is an integer number (1406470283946).

Almost surely, 2^{20010002100012} is an apocalyptic number.

It is an amenable number.

20010002100012 is an abundant number, since it is smaller than the sum of its proper divisors (30622928122044).

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

20010002100012 is a wasteful number, since it uses less digits than its factorization.

20010002100012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572434958 (or 572434953 counting only the distinct ones).

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

Adding to 20010002100012 its reverse (21000120001002), we get a palindrome (41010122101014).

The spelling of 20010002100012 in words is "twenty trillion, ten billion, two million, one hundred thousand, twelve".