210012120110121 has 16 divisors (see below), whose sum is σ = 320018925318528. Its totient is φ = 120006754560000.

The previous prime is 210012120110083. The next prime is 210012120110201. The reversal of 210012120110121 is 121011021210012.

It is a happy number.

It is not a de Polignac number, because 210012120110121 - 2⁷ = 210012120109993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 210012120110121.

It is not an unprimeable number, because it can be changed into a prime (210012120110021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8758771 + ... + 22287671.

It is an arithmetic number, because the mean of its divisors is an integer number (20001182832408).

Almost surely, 2^{210012120110121} is an apocalyptic number.

210012120110121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

210012120110121 is a deficient number, since it is larger than the sum of its proper divisors (110006805208407).

210012120110121 is a wasteful number, since it uses less digits than its factorization.

210012120110121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14268112.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 210012120110121 its reverse (121011021210012), we get a palindrome (331023141320133).

The spelling of 210012120110121 in words is "two hundred ten trillion, twelve billion, one hundred twenty million, one hundred ten thousand, one hundred twenty-one".