1222513513321 has 16 divisors (see below), whose sum is σ = 1240636780800. Its totient is φ = 1204459296768.

The previous prime is 1222513513307. The next prime is 1222513513337. The reversal of 1222513513321 is 1233153152221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1222513513321 - 2¹¹ = 1222513511273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222513513301) 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, 75320835 + ... + 75337063.

It is an arithmetic number, because the mean of its divisors is an integer number (77539798800).

Almost surely, 2^{1222513513321} is an apocalyptic number.

It is an amenable number.

1222513513321 is a deficient number, since it is larger than the sum of its proper divisors (18123267479).

1222513513321 is a wasteful number, since it uses less digits than its factorization.

1222513513321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18288.

The product of its digits is 10800, while the sum is 31.

Adding to 1222513513321 its reverse (1233153152221), we get a palindrome (2455666665542).

The spelling of 1222513513321 in words is "one trillion, two hundred twenty-two billion, five hundred thirteen million, five hundred thirteen thousand, three hundred twenty-one".