1213534345512 has 32 divisors (see below), whose sum is σ = 3035492902080. Its totient is φ = 404290510080.

The previous prime is 1213534345501. The next prime is 1213534345519. The reversal of 1213534345512 is 2155434353121.

It is a super-3 number, since 3×1213534345512³ (a number of 37 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1213534345519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13763793 + ... + 13851680.

It is an arithmetic number, because the mean of its divisors is an integer number (94859153190).

Almost surely, 2^{1213534345512} is an apocalyptic number.

1213534345512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1213534345512 is an abundant number, since it is smaller than the sum of its proper divisors (1821958556568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213534345512 is a wasteful number, since it uses less digits than its factorization.

1213534345512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27617313 (or 27617309 counting only the distinct ones).

The product of its digits is 216000, while the sum is 39.

Adding to 1213534345512 its reverse (2155434353121), we get a palindrome (3368968698633).

The spelling of 1213534345512 in words is "one trillion, two hundred thirteen billion, five hundred thirty-four million, three hundred forty-five thousand, five hundred twelve".