200202201012121 has 24 divisors (see below), whose sum is σ = 256575380958720. Its totient is φ = 154457143596000.

The previous prime is 200202201012053. The next prime is 200202201012127. The reversal of 200202201012121 is 121210102202002.

It is a happy number.

It is not a de Polignac number, because 200202201012121 - 2¹¹ = 200202201010073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200202201012095 and 200202201012104.

It is not an unprimeable number, because it can be changed into a prime (200202201012127) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1838721081 + ... + 1838829958.

It is an arithmetic number, because the mean of its divisors is an integer number (10690640873280).

Almost surely, 2^{200202201012121} is an apocalyptic number.

It is an amenable number.

200202201012121 is a deficient number, since it is larger than the sum of its proper divisors (56373179946599).

200202201012121 is a wasteful number, since it uses less digits than its factorization.

200202201012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3677551165 (or 3677551158 counting only the distinct ones).

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

Adding to 200202201012121 its reverse (121210102202002), we get a palindrome (321412303214123).

The spelling of 200202201012121 in words is "two hundred trillion, two hundred two billion, two hundred one million, twelve thousand, one hundred twenty-one".