2101012001002 has 4 divisors (see below), whose sum is σ = 3151518001506. Its totient is φ = 1050506000500.

The previous prime is 2101012000979. The next prime is 2101012001009. The reversal of 2101012001002 is 2001002101012.

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

It can be written as a sum of positive squares in only one way, i.e., 1473210910081 + 627801090921 = 1213759^2 + 792339^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2101012001002.

It is not an unprimeable number, because it can be changed into a prime (2101012001009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525253000249 + ... + 525253000252.

Almost surely, 2^{2101012001002} is an apocalyptic number.

2101012001002 is a deficient number, since it is larger than the sum of its proper divisors (1050506000504).

2101012001002 is a wasteful number, since it uses less digits than its factorization.

2101012001002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050506000503.

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

Adding to 2101012001002 its reverse (2001002101012), we get a palindrome (4102014102014).

The spelling of 2101012001002 in words is "two trillion, one hundred one billion, twelve million, one thousand, two".