212011192 has 8 divisors (see below), whose sum is σ = 397521000. Its totient is φ = 106005592.

The previous prime is 212011187. The next prime is 212011193. The reversal of 212011192 is 291110212.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212011193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13250692 + ... + 13250707.

It is an arithmetic number, because the mean of its divisors is an integer number (49690125).

Almost surely, 2^212011192 is an apocalyptic number.

It is an amenable number.

212011192 is a deficient number, since it is larger than the sum of its proper divisors (185509808).

212011192 is a wasteful number, since it uses less digits than its factorization.

212011192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26501405 (or 26501401 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 212011192 is about 14560.6041083466. The cubic root of 212011192 is about 596.2836884979.

The spelling of 212011192 in words is "two hundred twelve million, eleven thousand, one hundred ninety-two".