12021102112 has 12 divisors (see below), whose sum is σ = 23666544846. Its totient is φ = 6010551040.

The previous prime is 12021102109. The next prime is 12021102139. The reversal of 12021102112 is 21120112021.

It can be written as a sum of positive squares in only one way, i.e., 6750922896 + 5270179216 = 82164^2 + 72596^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12021102092 and 12021102101.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 187829689 + ... + 187829752.

Almost surely, 2^12021102112 is an apocalyptic number.

It is an amenable number.

12021102112 is a deficient number, since it is larger than the sum of its proper divisors (11645442734).

12021102112 is an equidigital number, since it uses as much as digits as its factorization.

12021102112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375659451 (or 375659443 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12021102112 its reverse (21120112021), we get a palindrome (33141214133).

Subtracting 12021102112 from its reverse (21120112021), we obtain a palindrome (9099009909).

The spelling of 12021102112 in words is "twelve billion, twenty-one million, one hundred two thousand, one hundred twelve".