210202102102121 has 8 divisors (see below), whose sum is σ = 226904817862080. Its totient is φ = 194129677502992.

The previous prime is 210202102102099. The next prime is 210202102102127. The reversal of 210202102102121 is 121201201202012.

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

It is not a de Polignac number, because 210202102102121 - 2¹⁰ = 210202102101097 is a prime.

It is a super-2 number, since 2×210202102102121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 210202102102121.

It is not an unprimeable number, because it can be changed into a prime (210202102102127) 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, 157572789515 + ... + 157572790848.

It is an arithmetic number, because the mean of its divisors is an integer number (28363102232760).

Almost surely, 2^{210202102102121} is an apocalyptic number.

It is an amenable number.

210202102102121 is a deficient number, since it is larger than the sum of its proper divisors (16702715759959).

210202102102121 is a wasteful number, since it uses less digits than its factorization.

210202102102121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315145580415.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 210202102102121 its reverse (121201201202012), we get a palindrome (331403303304133).

The spelling of 210202102102121 in words is "two hundred ten trillion, two hundred two billion, one hundred two million, one hundred two thousand, one hundred twenty-one".