212297708805 has 32 divisors (see below), whose sum is σ = 418063183104. Its totient is φ = 89584966656.

The previous prime is 212297708801. The next prime is 212297708827. The reversal of 212297708805 is 508807792212.

It is not a de Polignac number, because 212297708805 - 2² = 212297708801 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212297708801) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77763364 + ... + 77766093.

It is an arithmetic number, because the mean of its divisors is an integer number (13064474472).

Almost surely, 2^212297708805 is an apocalyptic number.

It is an amenable number.

212297708805 is a deficient number, since it is larger than the sum of its proper divisors (205765474299).

212297708805 is a wasteful number, since it uses less digits than its factorization.

212297708805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155529485.

The product of its (nonzero) digits is 1128960, while the sum is 51.

The spelling of 212297708805 in words is "two hundred twelve billion, two hundred ninety-seven million, seven hundred eight thousand, eight hundred five".