12021222003 has 16 divisors (see below), whose sum is σ = 18334400256. Its totient is φ = 6863139360.

The previous prime is 12021221999. The next prime is 12021222023. The reversal of 12021222003 is 30022212021.

It is a happy number.

It is not a de Polignac number, because 12021222003 - 2² = 12021221999 is a prime.

It is a super-2 number, since 2×12021222003² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12021222023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 231288 + ... + 278453.

It is an arithmetic number, because the mean of its divisors is an integer number (1145900016).

Almost surely, 2^12021222003 is an apocalyptic number.

12021222003 is a deficient number, since it is larger than the sum of its proper divisors (6313178253).

12021222003 is a wasteful number, since it uses less digits than its factorization.

12021222003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510874.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 12021222003 its reverse (30022212021), we get a palindrome (42043434024).

The spelling of 12021222003 in words is "twelve billion, twenty-one million, two hundred twenty-two thousand, three".