12121020003 has 32 divisors (see below), whose sum is σ = 17028000000. Its totient is φ = 7658082432.

The previous prime is 12121020001. The next prime is 12121020011. The reversal of 12121020003 is 30002012121.

It is not a de Polignac number, because 12121020003 - 2¹ = 12121020001 is a prime.

It is a super-2 number, since 2×12121020003² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12121020001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4407873 + ... + 4410621.

It is an arithmetic number, because the mean of its divisors is an integer number (532125000).

Almost surely, 2^12121020003 is an apocalyptic number.

12121020003 is a deficient number, since it is larger than the sum of its proper divisors (4906979997).

12121020003 is a wasteful number, since it uses less digits than its factorization.

12121020003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3699.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 12121020003 its reverse (30002012121), we get a palindrome (42123032124).

The spelling of 12121020003 in words is "twelve billion, one hundred twenty-one million, twenty thousand, three".