212231164517445 has 32 divisors (see below), whose sum is σ = 359547921802368. Its totient is φ = 106530726023168.

The previous prime is 212231164517419. The next prime is 212231164517461. The reversal of 212231164517445 is 544715461132212.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 212231164517445 - 2⁵ = 212231164517413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212231164517394 and 212231164517403.

It is a congruent number.

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 in 31 ways as a sum of consecutive naturals, for example, 23831242 + ... + 31502228.

It is an arithmetic number, because the mean of its divisors is an integer number (11235872556324).

Almost surely, 2^{212231164517445} is an apocalyptic number.

It is an amenable number.

212231164517445 is a deficient number, since it is larger than the sum of its proper divisors (147316757284923).

212231164517445 is a wasteful number, since it uses less digits than its factorization.

212231164517445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7779509.

The product of its digits is 1612800, while the sum is 48.

The spelling of 212231164517445 in words is "two hundred twelve trillion, two hundred thirty-one billion, one hundred sixty-four million, five hundred seventeen thousand, four hundred forty-five".