1221133133122 has 16 divisors (see below), whose sum is σ = 2093394644352. Its totient is φ = 523336881600.

The previous prime is 1221133133093. The next prime is 1221133133131. The reversal of 1221133133122 is 2213313311221.

It is a super-2 number, since 2×1221133133122² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

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, 941803 + ... + 1824625.

It is an arithmetic number, because the mean of its divisors is an integer number (130837165272).

Almost surely, 2^{1221133133122} is an apocalyptic number.

1221133133122 is a deficient number, since it is larger than the sum of its proper divisors (872261511230).

1221133133122 is an equidigital number, since it uses as much as digits as its factorization.

1221133133122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981633.

The product of its digits is 1296, while the sum is 25.

Adding to 1221133133122 its reverse (2213313311221), we get a palindrome (3434446444343).

The spelling of 1221133133122 in words is "one trillion, two hundred twenty-one billion, one hundred thirty-three million, one hundred thirty-three thousand, one hundred twenty-two".