210211212450 has 96 divisors (see below), whose sum is σ = 537130300032. Its totient is φ = 54381888000.

The previous prime is 210211212391. The next prime is 210211212451. The reversal of 210211212450 is 54212112012.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (210211212451) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 510595 + ... + 825305.

It is an arithmetic number, because the mean of its divisors is an integer number (5595107292).

Almost surely, 2^210211212450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210211212450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268565150016).

210211212450 is an abundant number, since it is smaller than the sum of its proper divisors (326919087582).

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

210211212450 is a wasteful number, since it uses less digits than its factorization.

210211212450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314860 (or 314855 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 21.

Adding to 210211212450 its reverse (54212112012), we get a palindrome (264423324462).

The spelling of 210211212450 in words is "two hundred ten billion, two hundred eleven million, two hundred twelve thousand, four hundred fifty".