212947169619 has 16 divisors (see below), whose sum is σ = 284717700000. Its totient is φ = 141571163136.

The previous prime is 212947169597. The next prime is 212947169641. The reversal of 212947169619 is 916961749212.

It is a happy number.

212947169619 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (212947169597) and next prime (212947169641).

It is not a de Polignac number, because 212947169619 - 2⁹ = 212947169107 is a prime.

It is a super-2 number, since 2×212947169619² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212947169219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1851397 + ... + 1963049.

It is an arithmetic number, because the mean of its divisors is an integer number (17794856250).

Almost surely, 2^212947169619 is an apocalyptic number.

212947169619 is a deficient number, since it is larger than the sum of its proper divisors (71770530381).

212947169619 is a wasteful number, since it uses less digits than its factorization.

212947169619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113414.

The product of its digits is 2939328, while the sum is 57.

The spelling of 212947169619 in words is "two hundred twelve billion, nine hundred forty-seven million, one hundred sixty-nine thousand, six hundred nineteen".