20010100111002 has 32 divisors (see below), whose sum is σ = 44925310684800. Its totient is φ = 6601270137984.

The previous prime is 20010100110961. The next prime is 20010100111007. The reversal of 20010100111002 is 20011100101002.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (20010100111007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1910084502 + ... + 1910094977.

It is an arithmetic number, because the mean of its divisors is an integer number (1403915958900).

Almost surely, 2^{20010100111002} is an apocalyptic number.

20010100111002 is an abundant number, since it is smaller than the sum of its proper divisors (24915210573798).

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

20010100111002 is a wasteful number, since it uses less digits than its factorization.

20010100111002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3820179587 (or 3820179581 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 20010100111002 its reverse (20011100101002), we get a palindrome (40021200212004).

The spelling of 20010100111002 in words is "twenty trillion, ten billion, one hundred million, one hundred eleven thousand, two".