10021132211221 has 2 divisors, whose sum is σ = 10021132211222. Its totient is φ = 10021132211220.

The previous prime is 10021132211213. The next prime is 10021132211243. The reversal of 10021132211221 is 12211223112001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9187355034225 + 833777176996 = 3031065^2 + 913114^2 .

It is a cyclic number.

It is not a de Polignac number, because 10021132211221 - 2³ = 10021132211213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10021132211021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5010566105610 + 5010566105611.

It is an arithmetic number, because the mean of its divisors is an integer number (5010566105611).

Almost surely, 2^{10021132211221} is an apocalyptic number.

It is an amenable number.

10021132211221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10021132211221 is an equidigital number, since it uses as much as digits as its factorization.

10021132211221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 10021132211221 its reverse (12211223112001), we get a palindrome (22232355323222).

The spelling of 10021132211221 in words is "ten trillion, twenty-one billion, one hundred thirty-two million, two hundred eleven thousand, two hundred twenty-one".