212021310045 has 32 divisors (see below), whose sum is σ = 343683430272. Its totient is φ = 111597796352.

The previous prime is 212021310019. The next prime is 212021310101. The reversal of 212021310045 is 540013120212.

It is a cyclic number.

It is not a de Polignac number, because 212021310045 - 2⁵ = 212021310013 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1097137 + ... + 1275833.

It is an arithmetic number, because the mean of its divisors is an integer number (10740107196).

Almost surely, 2^212021310045 is an apocalyptic number.

It is an amenable number.

212021310045 is a deficient number, since it is larger than the sum of its proper divisors (131662120227).

212021310045 is a wasteful number, since it uses less digits than its factorization.

212021310045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179741.

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 212021310045 its reverse (540013120212), we get a palindrome (752034430257).

The spelling of 212021310045 in words is "two hundred twelve billion, twenty-one million, three hundred ten thousand, forty-five".