212603612105 has 16 divisors (see below), whose sum is σ = 268833841920. Its totient is φ = 160962012288.

The previous prime is 212603612099. The next prime is 212603612167. The reversal of 212603612105 is 501216306212.

It is a cyclic number.

It is not a de Polignac number, because 212603612105 - 2¹⁰ = 212603611081 is a prime.

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, 1083617 + ... + 1264686.

It is an arithmetic number, because the mean of its divisors is an integer number (16802115120).

Almost surely, 2^212603612105 is an apocalyptic number.

It is an amenable number.

212603612105 is a deficient number, since it is larger than the sum of its proper divisors (56230229815).

212603612105 is a wasteful number, since it uses less digits than its factorization.

212603612105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2349280.

The product of its (nonzero) digits is 4320, while the sum is 29.

Adding to 212603612105 its reverse (501216306212), we get a palindrome (713819918317).

The spelling of 212603612105 in words is "two hundred twelve billion, six hundred three million, six hundred twelve thousand, one hundred five".