12221000002012 has 12 divisors (see below), whose sum is σ = 21506229055080. Its totient is φ = 6076363129136.

The previous prime is 12221000001983. The next prime is 12221000002019. The reversal of 12221000002012 is 21020000012221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12221000001983 and 12221000002001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221000002019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8534217163 + ... + 8534218594.

It is an arithmetic number, because the mean of its divisors is an integer number (1792185754590).

Almost surely, 2^{12221000002012} is an apocalyptic number.

It is an amenable number.

12221000002012 is a deficient number, since it is larger than the sum of its proper divisors (9285229053068).

12221000002012 is a wasteful number, since it uses less digits than its factorization.

12221000002012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17068435940 (or 17068435938 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 12221000002012 its reverse (21020000012221), we get a palindrome (33241000014233).

The spelling of 12221000002012 in words is "twelve trillion, two hundred twenty-one billion, two thousand, twelve".