212105305435 has 16 divisors (see below), whose sum is σ = 259459907616. Its totient is φ = 166398455808.

The previous prime is 212105305427. The next prime is 212105305463. The reversal of 212105305435 is 534503501212.

It is a cyclic number.

It is not a de Polignac number, because 212105305435 - 2³ = 212105305427 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212105305397 and 212105305406.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 325147 + ... + 727963.

It is an arithmetic number, because the mean of its divisors is an integer number (16216244226).

Almost surely, 2^212105305435 is an apocalyptic number.

212105305435 is a deficient number, since it is larger than the sum of its proper divisors (47354602181).

212105305435 is a wasteful number, since it uses less digits than its factorization.

212105305435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404862.

The product of its (nonzero) digits is 18000, while the sum is 31.

Adding to 212105305435 its reverse (534503501212), we get a palindrome (746608806647).

The spelling of 212105305435 in words is "two hundred twelve billion, one hundred five million, three hundred five thousand, four hundred thirty-five".