1213325552 has 10 divisors (see below), whose sum is σ = 2350818288. Its totient is φ = 606662768.

The previous prime is 1213325489. The next prime is 1213325557. The reversal of 1213325552 is 2555233121.

It is a super-2 number, since 2×1213325552² = 2944317790272209408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213325557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37916408 + ... + 37916439.

Almost surely, 2^1213325552 is an apocalyptic number.

It is an amenable number.

1213325552 is a deficient number, since it is larger than the sum of its proper divisors (1137492736).

1213325552 is an equidigital number, since it uses as much as digits as its factorization.

1213325552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75832855 (or 75832849 counting only the distinct ones).

The product of its digits is 9000, while the sum is 29.

The square root of 1213325552 is about 34832.8229117308. The cubic root of 1213325552 is about 1066.5775739824.

Adding to 1213325552 its reverse (2555233121), we get a palindrome (3768558673).

The spelling of 1213325552 in words is "one billion, two hundred thirteen million, three hundred twenty-five thousand, five hundred fifty-two".