10020001121 has 16 divisors (see below), whose sum is σ = 10881386880. Its totient is φ = 9171722880.

The previous prime is 10020001109. The next prime is 10020001141. The reversal of 10020001121 is 12110002001.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10020001121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10020001099 and 10020001108.

It is not an unprimeable number, because it can be changed into a prime (10020001141) 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, 1773461 + ... + 1779101.

It is an arithmetic number, because the mean of its divisors is an integer number (680086680).

Almost surely, 2^10020001121 is an apocalyptic number.

It is an amenable number.

10020001121 is a deficient number, since it is larger than the sum of its proper divisors (861385759).

10020001121 is a wasteful number, since it uses less digits than its factorization.

10020001121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6776.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 10020001121 its reverse (12110002001), we get a palindrome (22130003122).

The spelling of 10020001121 in words is "ten billion, twenty million, one thousand, one hundred twenty-one".