200121202121002 has 16 divisors (see below), whose sum is σ = 303184521786024. Its totient is φ = 99059895000000.

The previous prime is 200121202120999. The next prime is 200121202121003.

It is a happy number.

200121202121002 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 172208693454561 + 27912508666441 = 13122831^2 + 5283229^2 .

It is not an unprimeable number, because it can be changed into a prime (200121202121003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48030249 + ... + 52030252.

Almost surely, 2^{200121202121002} is an apocalyptic number.

200121202121002 is a deficient number, since it is larger than the sum of its proper divisors (103063319665022).

200121202121002 is a wasteful number, since it uses less digits than its factorization.

200121202121002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100070505.

The product of its (nonzero) digits is 64, while the sum is 16.

It can be divided in two parts, 20012120 and 2121002, that added together give a palindrome (22133122).

The spelling of 200121202121002 in words is "two hundred trillion, one hundred twenty-one billion, two hundred two million, one hundred twenty-one thousand, two".