1222212110121 has 48 divisors (see below), whose sum is σ = 1822284936576. Its totient is φ = 788789138688.

The previous prime is 1222212110089. The next prime is 1222212110137. The reversal of 1222212110121 is 1210112122221.

1222212110121 is a `hidden beast` number, since 1 + 222 + 212 + 110 + 121 = 666.

It is not a de Polignac number, because 1222212110121 - 2⁵ = 1222212110089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1222212110094 and 1222212110103.

It is not an unprimeable number, because it can be changed into a prime (1222212110321) 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 47 ways as a sum of consecutive naturals, for example, 118162876 + ... + 118173218.

It is an arithmetic number, because the mean of its divisors is an integer number (37964269512).

Almost surely, 2^{1222212110121} is an apocalyptic number.

It is an amenable number.

1222212110121 is a deficient number, since it is larger than the sum of its proper divisors (600072826455).

1222212110121 is a wasteful number, since it uses less digits than its factorization.

1222212110121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12142 (or 12139 counting only the distinct ones).

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

Adding to 1222212110121 its reverse (1210112122221), we get a palindrome (2432324232342).

The spelling of 1222212110121 in words is "one trillion, two hundred twenty-two billion, two hundred twelve million, one hundred ten thousand, one hundred twenty-one".