212212021220121 has 8 divisors (see below), whose sum is σ = 304714697136640. Its totient is φ = 130592013058512.

The previous prime is 212212021220099. The next prime is 212212021220131. The reversal of 212212021220121 is 121022120212212.

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

It is not a de Polignac number, because 212212021220121 - 2⁶ = 212212021220057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (212212021220131) 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, 2720666938681 + ... + 2720666938758.

It is an arithmetic number, because the mean of its divisors is an integer number (38089337142080).

Almost surely, 2^{212212021220121} is an apocalyptic number.

It is an amenable number.

212212021220121 is a deficient number, since it is larger than the sum of its proper divisors (92502675916519).

212212021220121 is a wasteful number, since it uses less digits than its factorization.

212212021220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5441333877455.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 212212021220121 its reverse (121022120212212), we get a palindrome (333234141432333).

The spelling of 212212021220121 in words is "two hundred twelve trillion, two hundred twelve billion, twenty-one million, two hundred twenty thousand, one hundred twenty-one".