2101211111002 has 8 divisors (see below), whose sum is σ = 3157866220212. Its totient is φ = 1048589037600.

The previous prime is 2101211110997. The next prime is 2101211111017. The reversal of 2101211111002 is 2001111121012.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2034020768481 + 67190342521 = 1426191^2 + 259211^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1008257649 + ... + 1008259732.

Almost surely, 2^{2101211111002} is an apocalyptic number.

2101211111002 is a deficient number, since it is larger than the sum of its proper divisors (1056655109210).

2101211111002 is a wasteful number, since it uses less digits than its factorization.

2101211111002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2016517904.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 2101211111002 its reverse (2001111121012), we get a palindrome (4102322232014).

The spelling of 2101211111002 in words is "two trillion, one hundred one billion, two hundred eleven million, one hundred eleven thousand, two".