212012112211021 has 8 divisors (see below), whose sum is σ = 213694055092224. Its totient is φ = 210330365520240.

The previous prime is 212012112211019. The next prime is 212012112211033. The reversal of 212012112211021 is 120112211210212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212012112211021 - 2¹ = 212012112211019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212012112211021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212012112211621) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 46877365 + ... + 51200698.

It is an arithmetic number, because the mean of its divisors is an integer number (26711756886528).

Almost surely, 2^{212012112211021} is an apocalyptic number.

It is an amenable number.

212012112211021 is a deficient number, since it is larger than the sum of its proper divisors (1681942881203).

212012112211021 is a wasteful number, since it uses less digits than its factorization.

212012112211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98095211.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 212012112211021 its reverse (120112211210212), we get a palindrome (332124323421233).

The spelling of 212012112211021 in words is "two hundred twelve trillion, twelve billion, one hundred twelve million, two hundred eleven thousand, twenty-one".