212012022212121 has 8 divisors (see below), whose sum is σ = 282725134786624. Its totient is φ = 141320128889520.

The previous prime is 212012022212101. The next prime is 212012022212143. The reversal of 212012022212121 is 121212220210212.

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

It is not a de Polignac number, because 212012022212121 - 2⁶ = 212012022212057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212012022212101) 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, 5304789661 + ... + 5304829626.

It is an arithmetic number, because the mean of its divisors is an integer number (35340641848328).

Almost surely, 2^{212012022212121} is an apocalyptic number.

It is an amenable number.

212012022212121 is a deficient number, since it is larger than the sum of its proper divisors (70713112574503).

212012022212121 is a wasteful number, since it uses less digits than its factorization.

212012022212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10609625951.

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

Adding to 212012022212121 its reverse (121212220210212), we get a palindrome (333224242422333).

The spelling of 212012022212121 in words is "two hundred twelve trillion, twelve billion, twenty-two million, two hundred twelve thousand, one hundred twenty-one".