212398017 has 48 divisors (see below), whose sum is σ = 342048960. Its totient is φ = 116453376.

The previous prime is 212398013. The next prime is 212398037. The reversal of 212398017 is 710893212.

It is not a de Polignac number, because 212398017 - 2² = 212398013 is a prime.

It is a super-2 number, since 2×212398017² = 90225835251064578, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212398013) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 163113 + ... + 164409.

It is an arithmetic number, because the mean of its divisors is an integer number (7126020).

Almost surely, 2^212398017 is an apocalyptic number.

It is an amenable number.

212398017 is a deficient number, since it is larger than the sum of its proper divisors (129650943).

212398017 is a wasteful number, since it uses less digits than its factorization.

212398017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1362 (or 1349 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 212398017 is about 14573.8813292822. The cubic root of 212398017 is about 596.6461179459.

The spelling of 212398017 in words is "two hundred twelve million, three hundred ninety-eight thousand, seventeen".