210400402104223 has 4 divisors (see below), whose sum is σ = 210755208853728. Its totient is φ = 210045595354720.

The previous prime is 210400402104203. The next prime is 210400402104329. The reversal of 210400402104223 is 322401204004012.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210400402104223 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 (210400402104203) 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, 177403373863 + ... + 177403375048.

It is an arithmetic number, because the mean of its divisors is an integer number (52688802213432).

Almost surely, 2^{210400402104223} is an apocalyptic number.

210400402104223 is a deficient number, since it is larger than the sum of its proper divisors (354806749505).

210400402104223 is an equidigital number, since it uses as much as digits as its factorization.

210400402104223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354806749504.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 210400402104223 its reverse (322401204004012), we get a palindrome (532801606108235).

The spelling of 210400402104223 in words is "two hundred ten trillion, four hundred billion, four hundred two million, one hundred four thousand, two hundred twenty-three".