210200121000123 has 32 divisors (see below), whose sum is σ = 290201214888000. Its totient is φ = 135175256832000.

The previous prime is 210200121000083. The next prime is 210200121000137. The reversal of 210200121000123 is 321000121002012.

It is not a de Polignac number, because 210200121000123 - 2⁹ = 210200120999611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (210200121000143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 672051673 + ... + 672364373.

It is an arithmetic number, because the mean of its divisors is an integer number (9068787965250).

Almost surely, 2^{210200121000123} is an apocalyptic number.

210200121000123 is a deficient number, since it is larger than the sum of its proper divisors (80001093887877).

210200121000123 is a wasteful number, since it uses less digits than its factorization.

210200121000123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319903.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 210200121000123 its reverse (321000121002012), we get a palindrome (531200242002135).

The spelling of 210200121000123 in words is "two hundred ten trillion, two hundred billion, one hundred twenty-one million, one hundred twenty-three", and thus it is an aban number.