10020121210021 has 8 divisors (see below), whose sum is σ = 10826049279584. Its totient is φ = 9219214499760.

The previous prime is 10020121209971. The next prime is 10020121210027. The reversal of 10020121210021 is 12001212102001.

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

It is a cyclic number.

It is not a de Polignac number, because 10020121210021 - 2⁷ = 10020121209893 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10020121209983 and 10020121210010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10020121210027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1255335675 + ... + 1255343656.

It is an arithmetic number, because the mean of its divisors is an integer number (1353256159948).

Almost surely, 2^{10020121210021} is an apocalyptic number.

It is an amenable number.

10020121210021 is a deficient number, since it is larger than the sum of its proper divisors (805928069563).

10020121210021 is a wasteful number, since it uses less digits than its factorization.

10020121210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2510679651.

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

Adding to 10020121210021 its reverse (12001212102001), we get a palindrome (22021333312022).

The spelling of 10020121210021 in words is "ten trillion, twenty billion, one hundred twenty-one million, two hundred ten thousand, twenty-one".