10201121021 has 8 divisors (see below), whose sum is σ = 12555225984. Its totient is φ = 8071216560.

The previous prime is 10201121017. The next prime is 10201121089. The reversal of 10201121021 is 12012110201.

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 10201121021 - 2² = 10201121017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10201120993 and 10201121011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10201121011) 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 7 ways as a sum of consecutive naturals, for example, 56050025 + ... + 56050206.

It is an arithmetic number, because the mean of its divisors is an integer number (1569403248).

Almost surely, 2^10201121021 is an apocalyptic number.

It is an amenable number.

10201121021 is a deficient number, since it is larger than the sum of its proper divisors (2354104963).

10201121021 is a wasteful number, since it uses less digits than its factorization.

10201121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112100251.

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

Adding to 10201121021 its reverse (12012110201), we get a palindrome (22213231222).

The spelling of 10201121021 in words is "ten billion, two hundred one million, one hundred twenty-one thousand, twenty-one".