12121110002 has 12 divisors (see below), whose sum is σ = 19188960606. Its totient is φ = 5741578080.

The previous prime is 12121109951. The next prime is 12121110061. The reversal of 12121110002 is 20001112121.

It can be written as a sum of positive squares in only one way, i.e., 6371072761 + 5750037241 = 79819^2 + 75829^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8393399 + ... + 8394842.

Almost surely, 2^12121110002 is an apocalyptic number.

12121110002 is a deficient number, since it is larger than the sum of its proper divisors (7067850604).

12121110002 is a wasteful number, since it uses less digits than its factorization.

12121110002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16788281 (or 16788262 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 12121110002 its reverse (20001112121), we get a palindrome (32122222123).

The spelling of 12121110002 in words is "twelve billion, one hundred twenty-one million, one hundred ten thousand, two".