212210220211021 has 8 divisors (see below), whose sum is σ = 214298563955840. Its totient is φ = 210122415896112.

The previous prime is 212210220211009. The next prime is 212210220211027. The reversal of 212210220211021 is 120112022012212.

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 212210220211021 - 2⁷ = 212210220210893 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 212210220211021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212210220211027) 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 7 ways as a sum of consecutive naturals, for example, 134066790 + ... + 135640423.

It is an arithmetic number, because the mean of its divisors is an integer number (26787320494480).

Almost surely, 2^{212210220211021} is an apocalyptic number.

It is an amenable number.

212210220211021 is a deficient number, since it is larger than the sum of its proper divisors (2088343744819).

212210220211021 is a wasteful number, since it uses less digits than its factorization.

212210220211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269714955.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 212210220211021 its reverse (120112022012212), we get a palindrome (332322242223233).

The spelling of 212210220211021 in words is "two hundred twelve trillion, two hundred ten billion, two hundred twenty million, two hundred eleven thousand, twenty-one".