212212023121 has 8 divisors (see below), whose sum is σ = 242533595520. Its totient is φ = 181891843008.

The previous prime is 212212023091. The next prime is 212212023137. The reversal of 212212023121 is 121320212212.

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 212212023121 - 2⁷ = 212212022993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212212023181) 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, 2025 + ... + 651481.

It is an arithmetic number, because the mean of its divisors is an integer number (30316699440).

Almost surely, 2^212212023121 is an apocalyptic number.

It is an amenable number.

212212023121 is a deficient number, since it is larger than the sum of its proper divisors (30321572399).

212212023121 is an equidigital number, since it uses as much as digits as its factorization.

212212023121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696143.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 212212023121 its reverse (121320212212), we get a palindrome (333532235333).

The spelling of 212212023121 in words is "two hundred twelve billion, two hundred twelve million, twenty-three thousand, one hundred twenty-one".