12102101008 has 40 divisors (see below), whose sum is σ = 23784886400. Its totient is φ = 5964326784.

The previous prime is 12102100999. The next prime is 12102101009. The reversal of 12102101008 is 80010120121.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 12102100982 and 12102101000.

It is not an unprimeable number, because it can be changed into a prime (12102101009) 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, 767023 + ... + 782641.

It is an arithmetic number, because the mean of its divisors is an integer number (594622160).

Almost surely, 2^12102101008 is an apocalyptic number.

It is an amenable number.

12102101008 is a deficient number, since it is larger than the sum of its proper divisors (11682785392).

12102101008 is a wasteful number, since it uses less digits than its factorization.

12102101008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16319 (or 16313 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12102101008 its reverse (80010120121), we get a palindrome (92112221129).

The spelling of 12102101008 in words is "twelve billion, one hundred two million, one hundred one thousand, eight".