212122222212021 has 8 divisors (see below), whose sum is σ = 308541414126624. Its totient is φ = 128558922552720.

The previous prime is 212122222212013. The next prime is 212122222212023. The reversal of 212122222212021 is 120212222221212.

It is a happy number.

212122222212021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 212122222212021 - 2³ = 212122222212013 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 212122222211982 and 212122222212000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212122222212023) 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, 3213973063786 + ... + 3213973063851.

It is an arithmetic number, because the mean of its divisors is an integer number (38567676765828).

Almost surely, 2^{212122222212021} is an apocalyptic number.

It is an amenable number.

212122222212021 is a deficient number, since it is larger than the sum of its proper divisors (96419191914603).

212122222212021 is a wasteful number, since it uses less digits than its factorization.

212122222212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6427946127651.

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 212122222212021 its reverse (120212222221212), we get a palindrome (332334444433233).

The spelling of 212122222212021 in words is "two hundred twelve trillion, one hundred twenty-two billion, two hundred twenty-two million, two hundred twelve thousand, twenty-one".