210405021050 has 48 divisors (see below), whose sum is σ = 450005013312. Its totient is φ = 71696275200.

The previous prime is 210405021049. The next prime is 210405021053. The reversal of 210405021050 is 50120504012.

It is not an unprimeable number, because it can be changed into a prime (210405021053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1786991 + ... + 1901090.

It is an arithmetic number, because the mean of its divisors is an integer number (9375104444).

Almost surely, 2^210405021050 is an apocalyptic number.

210405021050 is an abundant number, since it is smaller than the sum of its proper divisors (239599992262).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

210405021050 is a wasteful number, since it uses less digits than its factorization.

210405021050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3688263 (or 3688258 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

Adding to 210405021050 its reverse (50120504012), we get a palindrome (260525525062).

The spelling of 210405021050 in words is "two hundred ten billion, four hundred five million, twenty-one thousand, fifty".