1221222122133 has 8 divisors (see below), whose sum is σ = 1753549713888. Its totient is φ = 751521305904.

The previous prime is 1221222122117. The next prime is 1221222122177. The reversal of 1221222122133 is 3312212221221.

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

It is not a de Polignac number, because 1221222122133 - 2⁴ = 1221222122117 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221222122033) 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 7 ways as a sum of consecutive naturals, for example, 15656693835 + ... + 15656693912.

It is an arithmetic number, because the mean of its divisors is an integer number (219193714236).

Almost surely, 2^{1221222122133} is an apocalyptic number.

1221222122133 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1221222122133 is a deficient number, since it is larger than the sum of its proper divisors (532327591755).

1221222122133 is a wasteful number, since it uses less digits than its factorization.

1221222122133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31313387763.

The product of its digits is 1152, while the sum is 24.

Adding to 1221222122133 its reverse (3312212221221), we get a palindrome (4533434343354).

The spelling of 1221222122133 in words is "one trillion, two hundred twenty-one billion, two hundred twenty-two million, one hundred twenty-two thousand, one hundred thirty-three".