2001012100102 has 4 divisors (see below), whose sum is σ = 3001518150156. Its totient is φ = 1000506050050.

The previous prime is 2001012100097. The next prime is 2001012100103. The reversal of 2001012100102 is 2010012101002.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001012100103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500253025024 + ... + 500253025027.

It is an arithmetic number, because the mean of its divisors is an integer number (750379537539).

Almost surely, 2^{2001012100102} is an apocalyptic number.

2001012100102 is a deficient number, since it is larger than the sum of its proper divisors (1000506050054).

2001012100102 is a wasteful number, since it uses less digits than its factorization.

2001012100102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000506050053.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 2001012100102 its reverse (2010012101002), we get a palindrome (4011024201104).

The spelling of 2001012100102 in words is "two trillion, one billion, twelve million, one hundred thousand, one hundred two".