1222451024513 has 4 divisors (see below), whose sum is σ = 1222472009220. Its totient is φ = 1222430039808.

The previous prime is 1222451024491. The next prime is 1222451024519. The reversal of 1222451024513 is 3154201542221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1086697832704 + 135753191809 = 1042448^2 + 368447^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222451024513 - 2¹⁸ = 1222450762369 is a prime.

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 1222451024513.

It is not an unprimeable number, because it can be changed into a prime (1222451024519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10404728 + ... + 10521561.

It is an arithmetic number, because the mean of its divisors is an integer number (305618002305).

Almost surely, 2^{1222451024513} is an apocalyptic number.

It is an amenable number.

1222451024513 is a deficient number, since it is larger than the sum of its proper divisors (20984707).

1222451024513 is an equidigital number, since it uses as much as digits as its factorization.

1222451024513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20984706.

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 1222451024513 its reverse (3154201542221), we get a palindrome (4376652566734).

The spelling of 1222451024513 in words is "one trillion, two hundred twenty-two billion, four hundred fifty-one million, twenty-four thousand, five hundred thirteen".