1221134311222 has 32 divisors (see below), whose sum is σ = 2152929791232. Its totient is φ = 508577668704.

The previous prime is 1221134311211. The next prime is 1221134311237. The reversal of 1221134311222 is 2221134311221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5029788 + ... + 5266975.

It is an arithmetic number, because the mean of its divisors is an integer number (67279055976).

Almost surely, 2^{1221134311222} is an apocalyptic number.

1221134311222 is a deficient number, since it is larger than the sum of its proper divisors (931795480010).

1221134311222 is a wasteful number, since it uses less digits than its factorization.

1221134311222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10297012.

The product of its digits is 1152, while the sum is 25.

Adding to 1221134311222 its reverse (2221134311221), we get a palindrome (3442268622443).

Subtracting 1221134311222 from its reverse (2221134311221), we obtain a palindrome (999999999999).

The spelling of 1221134311222 in words is "one trillion, two hundred twenty-one billion, one hundred thirty-four million, three hundred eleven thousand, two hundred twenty-two".