210200102010121 has 4 divisors (see below), whose sum is σ = 210200728860432. Its totient is φ = 210199475159812.

The previous prime is 210200102010103. The next prime is 210200102010139. The reversal of 210200102010121 is 121010201002012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (210200102010103) and next prime (210200102010139).

It is a cyclic number.

It is not a de Polignac number, because 210200102010121 - 2⁷ = 210200102009993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210200102011121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 312921895 + ... + 313592908.

It is an arithmetic number, because the mean of its divisors is an integer number (52550182215108).

Almost surely, 2^{210200102010121} is an apocalyptic number.

It is an amenable number.

210200102010121 is a deficient number, since it is larger than the sum of its proper divisors (626850311).

210200102010121 is an equidigital number, since it uses as much as digits as its factorization.

210200102010121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626850310.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 210200102010121 its reverse (121010201002012), we get a palindrome (331210303012133).

The spelling of 210200102010121 in words is "two hundred ten trillion, two hundred billion, one hundred two million, ten thousand, one hundred twenty-one".