212395191212 has 6 divisors (see below), whose sum is σ = 371691584628. Its totient is φ = 106197595604.

The previous prime is 212395191199. The next prime is 212395191221. The reversal of 212395191212 is 212191593212.

It is a super-2 number, since 2×212395191212² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26549398898 + ... + 26549398905.

It is an arithmetic number, because the mean of its divisors is an integer number (61948597438).

Almost surely, 2^212395191212 is an apocalyptic number.

It is an amenable number.

212395191212 is a deficient number, since it is larger than the sum of its proper divisors (159296393416).

212395191212 is a wasteful number, since it uses less digits than its factorization.

212395191212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53098797807 (or 53098797805 counting only the distinct ones).

The product of its digits is 19440, while the sum is 38.

The spelling of 212395191212 in words is "two hundred twelve billion, three hundred ninety-five million, one hundred ninety-one thousand, two hundred twelve".