12212122000021 has 8 divisors (see below), whose sum is σ = 12855175916000. Its totient is φ = 11569099149360.

The previous prime is 12212122000009. The next prime is 12212122000049. The reversal of 12212122000021 is 12000022121221.

It is a happy number.

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 12212122000021 - 2⁵ = 12212121999989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12212121999959 and 12212122000004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212122001021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6957246 + ... + 8533903.

It is an arithmetic number, because the mean of its divisors is an integer number (1606896989500).

Almost surely, 2^{12212122000021} is an apocalyptic number.

It is an amenable number.

12212122000021 is a deficient number, since it is larger than the sum of its proper divisors (643053915979).

12212122000021 is a wasteful number, since it uses less digits than its factorization.

12212122000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15532659.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12212122000021 its reverse (12000022121221), we get a palindrome (24212144121242).

The spelling of 12212122000021 in words is "twelve trillion, two hundred twelve billion, one hundred twenty-two million, twenty-one", and thus it is an aban number.