212222111000121 has 48 divisors (see below), whose sum is σ = 325489166446080. Its totient is φ = 133009833646080.

The previous prime is 212222111000117. The next prime is 212222111000143. The reversal of 212222111000121 is 121000111222212.

212222111000121 is a `hidden beast` number, since 212 + 2 + 221 + 110 + 0 + 0 + 121 = 666.

It is not a de Polignac number, because 212222111000121 - 2² = 212222111000117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212222111000094 and 212222111000103.

It is not an unprimeable number, because it can be changed into a prime (212222111020121) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9348456 + ... + 22623833.

It is an arithmetic number, because the mean of its divisors is an integer number (6781024300960).

Almost surely, 2^{212222111000121} is an apocalyptic number.

It is an amenable number.

212222111000121 is a deficient number, since it is larger than the sum of its proper divisors (113267055445959).

212222111000121 is a wasteful number, since it uses less digits than its factorization.

212222111000121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31973006 (or 31973003 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 212222111000121 its reverse (121000111222212), we get a palindrome (333222222222333).

The spelling of 212222111000121 in words is "two hundred twelve trillion, two hundred twenty-two billion, one hundred eleven million, one hundred twenty-one", and thus it is an aban number.