210021001323 has 32 divisors (see below), whose sum is σ = 330129729024. Its totient is φ = 116253937152.

The previous prime is 210021001301. The next prime is 210021001339. The reversal of 210021001323 is 323100120012.

It is not a de Polignac number, because 210021001323 - 2⁵ = 210021001291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (210021001343) 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, 418990 + ... + 771747.

It is an arithmetic number, because the mean of its divisors is an integer number (10316554032).

Almost surely, 2^210021001323 is an apocalyptic number.

210021001323 is a deficient number, since it is larger than the sum of its proper divisors (120108727701).

210021001323 is a wasteful number, since it uses less digits than its factorization.

210021001323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1191011.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 210021001323 its reverse (323100120012), we get a palindrome (533121121335).

The spelling of 210021001323 in words is "two hundred ten billion, twenty-one million, one thousand, three hundred twenty-three".