212140303211021 has 4 divisors (see below), whose sum is σ = 212140359668700. Its totient is φ = 212140246753344.

The previous prime is 212140303210949. The next prime is 212140303211029. The reversal of 212140303211021 is 120112303041212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22845054122500 + 189295249088521 = 4779650^2 + 13758461^2 .

It is a cyclic number.

It is not a de Polignac number, because 212140303211021 - 2³⁰ = 212139229469197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212140303211029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22157276 + ... + 30252693.

It is an arithmetic number, because the mean of its divisors is an integer number (53035089917175).

Almost surely, 2^{212140303211021} is an apocalyptic number.

It is an amenable number.

212140303211021 is a deficient number, since it is larger than the sum of its proper divisors (56457679).

212140303211021 is an equidigital number, since it uses as much as digits as its factorization.

212140303211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56457678.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 212140303211021 its reverse (120112303041212), we get a palindrome (332252606252233).

The spelling of 212140303211021 in words is "two hundred twelve trillion, one hundred forty billion, three hundred three million, two hundred eleven thousand, twenty-one".