1222331121211 has 8 divisors (see below), whose sum is σ = 1275692386464. Its totient is φ = 1168987892160.

The previous prime is 1222331121199. The next prime is 1222331121223. The reversal of 1222331121211 is 1121211332221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1222331121199) and next prime (1222331121223).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222331121211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1222331121241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4370460 + ... + 4641721.

It is an arithmetic number, because the mean of its divisors is an integer number (159461548308).

Almost surely, 2^{1222331121211} is an apocalyptic number.

1222331121211 is a deficient number, since it is larger than the sum of its proper divisors (53361265253).

1222331121211 is an equidigital number, since it uses as much as digits as its factorization.

1222331121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9018101.

The product of its digits is 288, while the sum is 22.

Adding to 1222331121211 its reverse (1121211332221), we get a palindrome (2343542453432).

The spelling of 1222331121211 in words is "one trillion, two hundred twenty-two billion, three hundred thirty-one million, one hundred twenty-one thousand, two hundred eleven".