2100000001002 has 32 divisors (see below), whose sum is σ = 4363967880000. Its totient is φ = 672884690688.

The previous prime is 2100000000997. The next prime is 2100000001049. The reversal of 2100000001002 is 2001000000012.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26544127 + ... + 26623122.

It is an arithmetic number, because the mean of its divisors is an integer number (136373996250).

Almost surely, 2^{2100000001002} is an apocalyptic number.

2100000001002 is an abundant number, since it is smaller than the sum of its proper divisors (2263967878998).

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

2100000001002 is a wasteful number, since it uses less digits than its factorization.

2100000001002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53167510.

The product of its (nonzero) digits is 4, while the sum is 6.

Adding to 2100000001002 its reverse (2001000000012), we get a palindrome (4101000001014).

The spelling of 2100000001002 in words is "two trillion, one hundred billion, one thousand, two".