211345020250 has 192 divisors, whose sum is σ = 490842892800. Its totient is φ = 66719577600.

The previous prime is 211345020241. The next prime is 211345020277. The reversal of 211345020250 is 52020543112.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 177153654 + ... + 177154846.

It is an arithmetic number, because the mean of its divisors is an integer number (2556473400).

Almost surely, 2^211345020250 is an apocalyptic number.

211345020250 is an abundant number, since it is smaller than the sum of its proper divisors (279497872550).

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

211345020250 is a wasteful number, since it uses less digits than its factorization.

211345020250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1842 (or 1819 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 211345020250 its reverse (52020543112), we get a palindrome (263365563362).

The spelling of 211345020250 in words is "two hundred eleven billion, three hundred forty-five million, twenty thousand, two hundred fifty".