10021002122121 has 8 divisors (see below), whose sum is σ = 13361570845440. Its totient is φ = 6680550740112.

The previous prime is 10021002122083. The next prime is 10021002122147. The reversal of 10021002122121 is 12122120012001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10021002122121 - 2¹⁵ = 10021002089353 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10021002122121.

It is not an unprimeable number, because it can be changed into a prime (10021002122321) 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 7 ways as a sum of consecutive naturals, for example, 29135865 + ... + 29477798.

It is an arithmetic number, because the mean of its divisors is an integer number (1670196355680).

Almost surely, 2^{10021002122121} is an apocalyptic number.

It is an amenable number.

10021002122121 is a deficient number, since it is larger than the sum of its proper divisors (3340568723319).

10021002122121 is an equidigital number, since it uses as much as digits as its factorization.

10021002122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58670655.

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

Adding to 10021002122121 its reverse (12122120012001), we get a palindrome (22143122134122).

The spelling of 10021002122121 in words is "ten trillion, twenty-one billion, two million, one hundred twenty-two thousand, one hundred twenty-one".