210010020121123 has 16 divisors (see below), whose sum is σ = 211389983179200. Its totient is φ = 208633527881856.

The previous prime is 210010020121087. The next prime is 210010020121133. The reversal of 210010020121123 is 321121020010012.

It is a cyclic number.

It is not a de Polignac number, because 210010020121123 - 2²⁵ = 210009986566691 is a prime.

It is a super-2 number, since 2×210010020121123² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210010020121097 and 210010020121106.

It is not an unprimeable number, because it can be changed into a prime (210010020121133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 372120465 + ... + 372684397.

It is an arithmetic number, because the mean of its divisors is an integer number (13211873948700).

Almost surely, 2^{210010020121123} is an apocalyptic number.

210010020121123 is a deficient number, since it is larger than the sum of its proper divisors (1379963058077).

210010020121123 is a wasteful number, since it uses less digits than its factorization.

210010020121123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567006.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 210010020121123 its reverse (321121020010012), we get a palindrome (531131040131135).

The spelling of 210010020121123 in words is "two hundred ten trillion, ten billion, twenty million, one hundred twenty-one thousand, one hundred twenty-three".