10221200012121 has 64 divisors (see below), whose sum is σ = 16483380166656. Its totient is φ = 5507344180800.

The previous prime is 10221200012077. The next prime is 10221200012203. The reversal of 10221200012121 is 12121000212201.

It is not a de Polignac number, because 10221200012121 - 2⁶ = 10221200012057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10221200012121.

It is not an unprimeable number, because it can be changed into a prime (10221200012021) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 367298410 + ... + 367326236.

It is an arithmetic number, because the mean of its divisors is an integer number (257552815104).

Almost surely, 2^{10221200012121} is an apocalyptic number.

It is an amenable number.

10221200012121 is a deficient number, since it is larger than the sum of its proper divisors (6262180154535).

10221200012121 is a wasteful number, since it uses less digits than its factorization.

10221200012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38642.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 10221200012121 its reverse (12121000212201), we get a palindrome (22342200224322).

The spelling of 10221200012121 in words is "ten trillion, two hundred twenty-one billion, two hundred million, twelve thousand, one hundred twenty-one".