210210113121023 has 4 divisors (see below), whose sum is σ = 212291401369848. Its totient is φ = 208128824872200.

The previous prime is 210210113121011. The next prime is 210210113121053. The reversal of 210210113121023 is 320121311012012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 210210113121023 - 2¹⁰ = 210210113119999 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210210113120986 and 210210113121004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210210113121053) 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, 1040644124261 + ... + 1040644124462.

It is an arithmetic number, because the mean of its divisors is an integer number (53072850342462).

Almost surely, 2^{210210113121023} is an apocalyptic number.

210210113121023 is a deficient number, since it is larger than the sum of its proper divisors (2081288248825).

210210113121023 is a wasteful number, since it uses less digits than its factorization.

210210113121023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2081288248824.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 210210113121023 its reverse (320121311012012), we get a palindrome (530331424133035).

The spelling of 210210113121023 in words is "two hundred ten trillion, two hundred ten billion, one hundred thirteen million, one hundred twenty-one thousand, twenty-three".