210202121100121 has 8 divisors (see below), whose sum is σ = 220566714396480. Its totient is φ = 199939642023792.

The previous prime is 210202121099987. The next prime is 210202121100161. The reversal of 210202121100121 is 121001121202012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 210202121100121 - 2¹⁹ = 210202120575833 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210202121100095 and 210202121100104.

It is not an unprimeable number, because it can be changed into a prime (210202121100161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25528550790 + ... + 25528559023.

It is an arithmetic number, because the mean of its divisors is an integer number (27570839299560).

Almost surely, 2^{210202121100121} is an apocalyptic number.

It is an amenable number.

210202121100121 is a deficient number, since it is larger than the sum of its proper divisors (10364593296359).

210202121100121 is a wasteful number, since it uses less digits than its factorization.

210202121100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51057110015.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 210202121100121 its reverse (121001121202012), we get a palindrome (331203242302133).

The spelling of 210202121100121 in words is "two hundred ten trillion, two hundred two billion, one hundred twenty-one million, one hundred thousand, one hundred twenty-one".