10201021121 has 16 divisors (see below), whose sum is σ = 10659168000. Its totient is φ = 9750417600.

The previous prime is 10201021091. The next prime is 10201021123. The reversal of 10201021121 is 12112010201.

It is a cyclic number.

It is not a de Polignac number, because 10201021121 - 2¹⁰ = 10201020097 is a prime.

It is a super-2 number, since 2×10201021121² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10201021123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1340036 + ... + 1347626.

It is an arithmetic number, because the mean of its divisors is an integer number (666198000).

Almost surely, 2^10201021121 is an apocalyptic number.

It is an amenable number.

10201021121 is a deficient number, since it is larger than the sum of its proper divisors (458146879).

10201021121 is a wasteful number, since it uses less digits than its factorization.

10201021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8080.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 10201021121 its reverse (12112010201), we get a palindrome (22313031322).

The spelling of 10201021121 in words is "ten billion, two hundred one million, twenty-one thousand, one hundred twenty-one".