10221101210121 has 16 divisors (see below), whose sum is σ = 13712067016704. Its totient is φ = 6772115287184.

The previous prime is 10221101210081. The next prime is 10221101210167. The reversal of 10221101210121 is 12101210112201.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 10221101210121 - 2⁶ = 10221101210057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10221101210121.

It is not an unprimeable number, because it can be changed into a prime (10221101210171) 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, 1229350 + ... + 4685456.

It is an arithmetic number, because the mean of its divisors is an integer number (857004188544).

Almost surely, 2^{10221101210121} is an apocalyptic number.

It is an amenable number.

10221101210121 is a deficient number, since it is larger than the sum of its proper divisors (3490965806583).

10221101210121 is a wasteful number, since it uses less digits than its factorization.

10221101210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3462180.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 10221101210121 its reverse (12101210112201), we get a palindrome (22322311322322).

The spelling of 10221101210121 in words is "ten trillion, two hundred twenty-one billion, one hundred one million, two hundred ten thousand, one hundred twenty-one".