13121132 has 24 divisors (see below), whose sum is σ = 24170496. Its totient is φ = 6220368.
The previous prime is 13121117. The next prime is 13121159. The reversal of 13121132 is 23112131.
It is a super-2 number, since 2×131211322 = 344328209922848, which contains 22 as substring.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11123 + ... + 12245.
It is an arithmetic number, because the mean of its divisors is an integer number (1007104).
Almost surely, 213121132 is an apocalyptic number.
It is an amenable number.
13121132 is a deficient number, since it is larger than the sum of its proper divisors (11049364).
13121132 is a wasteful number, since it uses less digits than its factorization.
13121132 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1277 (or 1275 counting only the distinct ones).
The product of its digits is 36, while the sum is 14.
The square root of 13121132 is about 3622.3103124939. The cubic root of 13121132 is about 235.8615246245.
Adding to 13121132 its reverse (23112131), we get a palindrome (36233263).
Subtracting 13121132 from its reverse (23112131), we obtain a palindrome (9990999).
The spelling of 13121132 in words is "thirteen million, one hundred twenty-one thousand, one hundred thirty-two".
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