2101001221002 has 32 divisors (see below), whose sum is σ = 4385017492992. Its totient is φ = 669835666544.

The previous prime is 2101001220961. The next prime is 2101001221019. The reversal of 2101001221002 is 2001221001012.

It is a super-2 number, since 2×2101001221002² (a number of 25 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 1371793 + ... + 2466539.

It is an arithmetic number, because the mean of its divisors is an integer number (137031796656).

Almost surely, 2^{2101001221002} is an apocalyptic number.

2101001221002 is an abundant number, since it is smaller than the sum of its proper divisors (2284016271990).

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

2101001221002 is a wasteful number, since it uses less digits than its factorization.

2101001221002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1108682.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2101001221002 its reverse (2001221001012), we get a palindrome (4102222222014).

The spelling of 2101001221002 in words is "two trillion, one hundred one billion, one million, two hundred twenty-one thousand, two".