10021000122121 has 16 divisors (see below), whose sum is σ = 10917968400000. Its totient is φ = 9161335080576.

The previous prime is 10021000122079. The next prime is 10021000122127. The reversal of 10021000122121 is 12122100012001.

It is a cyclic number.

It is not a de Polignac number, because 10021000122121 - 2⁴¹ = 7821976866569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10021000122127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3804196 + ... + 5874853.

It is an arithmetic number, because the mean of its divisors is an integer number (682373025000).

Almost surely, 2^{10021000122121} is an apocalyptic number.

It is an amenable number.

10021000122121 is a deficient number, since it is larger than the sum of its proper divisors (896968277879).

10021000122121 is a wasteful number, since it uses less digits than its factorization.

10021000122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9680976.

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

Adding to 10021000122121 its reverse (12122100012001), we get a palindrome (22143100134122).

The spelling of 10021000122121 in words is "ten trillion, twenty-one billion, one hundred twenty-two thousand, one hundred twenty-one".