1223220001121 has 16 divisors (see below), whose sum is σ = 1366775429760. Its totient is φ = 1087925541120.

The previous prime is 1223220001111. The next prime is 1223220001169. The reversal of 1223220001121 is 1211000223221.

It is a cyclic number.

It is not a de Polignac number, because 1223220001121 - 2⁶ = 1223220001057 is a prime.

It is a super-2 number, since 2×1223220001121² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1223220001121.

It is not an unprimeable number, because it can be changed into a prime (1223220001111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4641365 + ... + 4897826.

It is an arithmetic number, because the mean of its divisors is an integer number (85423464360).

Almost surely, 2^{1223220001121} is an apocalyptic number.

It is an amenable number.

1223220001121 is a deficient number, since it is larger than the sum of its proper divisors (143555428639).

1223220001121 is a wasteful number, since it uses less digits than its factorization.

1223220001121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9539624.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 1223220001121 its reverse (1211000223221), we get a palindrome (2434220224342).

The spelling of 1223220001121 in words is "one trillion, two hundred twenty-three billion, two hundred twenty million, one thousand, one hundred twenty-one".