210200202121 has 32 divisors (see below), whose sum is σ = 261621301760. Its totient is φ = 164442617856.

The previous prime is 210200202109. The next prime is 210200202151. The reversal of 210200202121 is 121202002012.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 210200202121 - 2⁷ = 210200201993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (210200202101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9849100 + ... + 9870418.

It is an arithmetic number, because the mean of its divisors is an integer number (8175665680).

Almost surely, 2^210200202121 is an apocalyptic number.

It is an amenable number.

210200202121 is a deficient number, since it is larger than the sum of its proper divisors (51421099639).

210200202121 is a wasteful number, since it uses less digits than its factorization.

210200202121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22553.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 210200202121 its reverse (121202002012), we get a palindrome (331402204133).

The spelling of 210200202121 in words is "two hundred ten billion, two hundred million, two hundred two thousand, one hundred twenty-one".