1222111001121 has 8 divisors (see below), whose sum is σ = 1629502237920. Its totient is φ = 814730215872.

The previous prime is 1222111001119. The next prime is 1222111001269. The reversal of 1222111001121 is 1211001112221.

It is a happy number.

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

It is not a de Polignac number, because 1222111001121 - 2¹ = 1222111001119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1222111001121.

It is not an unprimeable number, because it can be changed into a prime (1222111003121) 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, 2335851 + ... + 2810768.

It is an arithmetic number, because the mean of its divisors is an integer number (203687779740).

Almost surely, 2^{1222111001121} is an apocalyptic number.

It is an amenable number.

1222111001121 is a deficient number, since it is larger than the sum of its proper divisors (407391236799).

1222111001121 is an equidigital number, since it uses as much as digits as its factorization.

1222111001121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5225775.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1222111001121 its reverse (1211001112221), we get a palindrome (2433112113342).

It can be divided in two parts, 122211100 and 1121, that added together give a palindrome (122212221).

The spelling of 1222111001121 in words is "one trillion, two hundred twenty-two billion, one hundred eleven million, one thousand, one hundred twenty-one".