1213326502 has 4 divisors (see below), whose sum is σ = 1819989756. Its totient is φ = 606663250.

The previous prime is 1213326497. The next prime is 1213326511. The reversal of 1213326502 is 2056233121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2056233121 = 73 ⋅28167577.

It is a super-2 number, since 2×1213326502² = 2944322400911112008, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303331624 + ... + 303331627.

It is an arithmetic number, because the mean of its divisors is an integer number (454997439).

Almost surely, 2^1213326502 is an apocalyptic number.

1213326502 is a deficient number, since it is larger than the sum of its proper divisors (606663254).

1213326502 is an equidigital number, since it uses as much as digits as its factorization.

1213326502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606663253.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 1213326502 is about 34832.8365482916. The cubic root of 1213326502 is about 1066.5778523491.

Adding to 1213326502 its reverse (2056233121), we get a palindrome (3269559623).

The spelling of 1213326502 in words is "one billion, two hundred thirteen million, three hundred twenty-six thousand, five hundred two".