12221110012 has 6 divisors (see below), whose sum is σ = 21386942528. Its totient is φ = 6110555004.

The previous prime is 12221109977. The next prime is 12221110021. The reversal of 12221110012 is 21001112221.

It is a junction number, because it is equal to n+sod(n) for n = 12221109974 and 12221110001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1527638748 + ... + 1527638755.

Almost surely, 2^12221110012 is an apocalyptic number.

It is an amenable number.

12221110012 is a deficient number, since it is larger than the sum of its proper divisors (9165832516).

12221110012 is a wasteful number, since it uses less digits than its factorization.

12221110012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3055277507 (or 3055277505 counting only the distinct ones).

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

Adding to 12221110012 its reverse (21001112221), we get a palindrome (33222222233).

The spelling of 12221110012 in words is "twelve billion, two hundred twenty-one million, one hundred ten thousand, twelve".