1251452302213 has 4 divisors (see below), whose sum is σ = 1251454578508. Its totient is φ = 1251450025920.

The previous prime is 1251452302183. The next prime is 1251452302267. The reversal of 1251452302213 is 3122032541521.

It is a happy number.

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 564612479649 + 686839822564 = 751407^2 + 828758^2 .

It is a cyclic number.

It is not a de Polignac number, because 1251452302213 - 2¹³ = 1251452294021 is a prime.

It is a super-2 number, since 2×1251452302213² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1251452302273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 254695 + ... + 1602427.

It is an arithmetic number, because the mean of its divisors is an integer number (312863644627).

Almost surely, 2^{1251452302213} is an apocalyptic number.

It is an amenable number.

1251452302213 is a deficient number, since it is larger than the sum of its proper divisors (2276295).

1251452302213 is an equidigital number, since it uses as much as digits as its factorization.

1251452302213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2276294.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 1251452302213 its reverse (3122032541521), we get a palindrome (4373484843734).

The spelling of 1251452302213 in words is "one trillion, two hundred fifty-one billion, four hundred fifty-two million, three hundred two thousand, two hundred thirteen".