210123100021343 has 4 divisors (see below), whose sum is σ = 217368724160040. Its totient is φ = 202877475882648.

The previous prime is 210123100021339. The next prime is 210123100021477. The reversal of 210123100021343 is 343120001321012.

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 210123100021343 - 2² = 210123100021339 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210123100021313) 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, 3622812069305 + ... + 3622812069362.

It is an arithmetic number, because the mean of its divisors is an integer number (54342181040010).

Almost surely, 2^{210123100021343} is an apocalyptic number.

210123100021343 is a deficient number, since it is larger than the sum of its proper divisors (7245624138697).

210123100021343 is an equidigital number, since it uses as much as digits as its factorization.

210123100021343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7245624138696.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 210123100021343 its reverse (343120001321012), we get a palindrome (553243101342355).

The spelling of 210123100021343 in words is "two hundred ten trillion, one hundred twenty-three billion, one hundred million, twenty-one thousand, three hundred forty-three".