212042302251 has 24 divisors (see below), whose sum is σ = 324152394480. Its totient is φ = 122811826176.

The previous prime is 212042302243. The next prime is 212042302253. The reversal of 212042302251 is 152203240212.

It is not a de Polignac number, because 212042302251 - 2³ = 212042302243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212042302253) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12292246 + ... + 12309483.

It is an arithmetic number, because the mean of its divisors is an integer number (13506349770).

Almost surely, 2^212042302251 is an apocalyptic number.

212042302251 is a deficient number, since it is larger than the sum of its proper divisors (112110092229).

212042302251 is a wasteful number, since it uses less digits than its factorization.

212042302251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24601775 (or 24601762 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 212042302251 its reverse (152203240212), we get a palindrome (364245542463).

The spelling of 212042302251 in words is "two hundred twelve billion, forty-two million, three hundred two thousand, two hundred fifty-one".