12102116552 has 8 divisors (see below), whose sum is σ = 22691468550. Its totient is φ = 6051058272.

The previous prime is 12102116549. The next prime is 12102116573. The reversal of 12102116552 is 25561120121.

It can be written as a sum of positive squares in only one way, i.e., 10360389796 + 1741726756 = 101786^2 + 41734^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×12102116552² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 756382277 + ... + 756382292.

Almost surely, 2^12102116552 is an apocalyptic number.

It is an amenable number.

12102116552 is a deficient number, since it is larger than the sum of its proper divisors (10589351998).

12102116552 is a wasteful number, since it uses less digits than its factorization.

12102116552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1512764575 (or 1512764571 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 26.

Adding to 12102116552 its reverse (25561120121), we get a palindrome (37663236673).

The spelling of 12102116552 in words is "twelve billion, one hundred two million, one hundred sixteen thousand, five hundred fifty-two".