10221220012 has 24 divisors (see below), whose sum is σ = 19936128240. Its totient is φ = 4556828160.

The previous prime is 10221219997. The next prime is 10221220073. The reversal of 10221220012 is 21002212201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 10221219974 and 10221220001.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3954289 + ... + 3956872.

It is an arithmetic number, because the mean of its divisors is an integer number (830672010).

Almost surely, 2^10221220012 is an apocalyptic number.

It is an amenable number.

10221220012 is a deficient number, since it is larger than the sum of its proper divisors (9714908228).

10221220012 is a wasteful number, since it uses less digits than its factorization.

10221220012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7911201 (or 7911199 counting only the distinct ones).

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

Adding to 10221220012 its reverse (21002212201), we get a palindrome (31223432213).

The spelling of 10221220012 in words is "ten billion, two hundred twenty-one million, two hundred twenty thousand, twelve".