212185842258 has 32 divisors (see below), whose sum is σ = 457061242176. Its totient is φ = 65281439808.

The previous prime is 212185842257. The next prime is 212185842299. The reversal of 212185842258 is 852248581212.

It is not an unprimeable number, because it can be changed into a prime (212185842257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 682860 + ... + 943752.

It is an arithmetic number, because the mean of its divisors is an integer number (14283163818).

Almost surely, 2^212185842258 is an apocalyptic number.

212185842258 is an abundant number, since it is smaller than the sum of its proper divisors (244875399918).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212185842258 is a wasteful number, since it uses less digits than its factorization.

212185842258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271338.

The product of its digits is 819200, while the sum is 48.

The spelling of 212185842258 in words is "two hundred twelve billion, one hundred eighty-five million, eight hundred forty-two thousand, two hundred fifty-eight".