2101201221002 has 16 divisors (see below), whose sum is σ = 3401161075872. Its totient is φ = 967810050480.

The previous prime is 2101201221001. The next prime is 2101201221011. The reversal of 2101201221002 is 2001221021012.

It is a super-2 number, since 2×2101201221002² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2101201221001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82284008 + ... + 82309539.

It is an arithmetic number, because the mean of its divisors is an integer number (212572567242).

Almost surely, 2^{2101201221002} is an apocalyptic number.

2101201221002 is a deficient number, since it is larger than the sum of its proper divisors (1299959854870).

2101201221002 is a wasteful number, since it uses less digits than its factorization.

2101201221002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164594053.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2101201221002 its reverse (2001221021012), we get a palindrome (4102422242014).

The spelling of 2101201221002 in words is "two trillion, one hundred one billion, two hundred one million, two hundred twenty-one thousand, two".