10021132131221 has 16 divisors (see below), whose sum is σ = 10289126115840. Its totient is φ = 9754738625520.

The previous prime is 10021132131217. The next prime is 10021132131251. The reversal of 10021132131221 is 12213123112001.

It is not a de Polignac number, because 10021132131221 - 2² = 10021132131217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10021132131193 and 10021132131202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021132131251) 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, 72399146 + ... + 72537428.

It is an arithmetic number, because the mean of its divisors is an integer number (643070382240).

Almost surely, 2^{10021132131221} is an apocalyptic number.

It is an amenable number.

10021132131221 is a deficient number, since it is larger than the sum of its proper divisors (267993984619).

10021132131221 is a wasteful number, since it uses less digits than its factorization.

10021132131221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144056.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 10021132131221 its reverse (12213123112001), we get a palindrome (22234255243222).

The spelling of 10021132131221 in words is "ten trillion, twenty-one billion, one hundred thirty-two million, one hundred thirty-one thousand, two hundred twenty-one".