251340212210 has 8 divisors (see below), whose sum is σ = 452412381996. Its totient is φ = 100536084880.

The previous prime is 251340212197. The next prime is 251340212243. The reversal of 251340212210 is 12212043152.

251340212210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 241009319329 + 10330892881 = 490927^2 + 101641^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12567010601 + ... + 12567010620.

Almost surely, 2^251340212210 is an apocalyptic number.

251340212210 is a deficient number, since it is larger than the sum of its proper divisors (201072169786).

251340212210 is a wasteful number, since it uses less digits than its factorization.

251340212210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25134021228.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 251340212210 its reverse (12212043152), we get a palindrome (263552255362).

The spelling of 251340212210 in words is "two hundred fifty-one billion, three hundred forty million, two hundred twelve thousand, two hundred ten".