210015121173 has 32 divisors (see below), whose sum is σ = 329174385792. Its totient is φ = 117419673600.

The previous prime is 210015121139. The next prime is 210015121181. The reversal of 210015121173 is 371121510012.

210015121173 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 210015121173 - 2⁶ = 210015121109 is a prime.

It is a super-2 number, since 2×210015121173² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210015121103) 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 31 ways as a sum of consecutive naturals, for example, 563133 + ... + 858573.

It is an arithmetic number, because the mean of its divisors is an integer number (10286699556).

Almost surely, 2^210015121173 is an apocalyptic number.

It is an amenable number.

210015121173 is a deficient number, since it is larger than the sum of its proper divisors (119159264619).

210015121173 is a wasteful number, since it uses less digits than its factorization.

210015121173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297125.

The product of its (nonzero) digits is 420, while the sum is 24.

Adding to 210015121173 its reverse (371121510012), we get a palindrome (581136631185).

The spelling of 210015121173 in words is "two hundred ten billion, fifteen million, one hundred twenty-one thousand, one hundred seventy-three".