212210012021 has 8 divisors (see below), whose sum is σ = 242529747840. Its totient is φ = 181891281168.

The previous prime is 212210011933. The next prime is 212210012093. The reversal of 212210012021 is 120210012212.

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 212210012021 - 2²⁶ = 212142903157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 212210011987 and 212210012005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212210012621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 274640 + ... + 706998.

It is an arithmetic number, because the mean of its divisors is an integer number (30316218480).

Almost surely, 2^212210012021 is an apocalyptic number.

It is an amenable number.

212210012021 is a deficient number, since it is larger than the sum of its proper divisors (30319735819).

212210012021 is an equidigital number, since it uses as much as digits as its factorization.

212210012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502483.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 212210012021 its reverse (120210012212), we get a palindrome (332420024233).

The spelling of 212210012021 in words is "two hundred twelve billion, two hundred ten million, twelve thousand, twenty-one".