12121221010022 has 8 divisors (see below), whose sum is σ = 18351755174376. Its totient is φ = 6003969285232.

The previous prime is 12121221010021. The next prime is 12121221010049. The reversal of 12121221010022 is 22001012212121.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121221010021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28320609623 + ... + 28320610050.

It is an arithmetic number, because the mean of its divisors is an integer number (2293969396797).

Almost surely, 2^{12121221010022} is an apocalyptic number.

12121221010022 is a deficient number, since it is larger than the sum of its proper divisors (6230534164354).

12121221010022 is a wasteful number, since it uses less digits than its factorization.

12121221010022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56641219782.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12121221010022 its reverse (22001012212121), we get a palindrome (34122233222143).

The spelling of 12121221010022 in words is "twelve trillion, one hundred twenty-one billion, two hundred twenty-one million, ten thousand, twenty-two".