10021121213 has 2 divisors, whose sum is σ = 10021121214. Its totient is φ = 10021121212.

The previous prime is 10021121179. The next prime is 10021121221. The reversal of 10021121213 is 31212112001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6052373209 + 3968748004 = 77797^2 + 62998^2 .

It is a cyclic number.

It is not a de Polignac number, because 10021121213 - 2⁸ = 10021120957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10021121293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5010560606 + 5010560607.

It is an arithmetic number, because the mean of its divisors is an integer number (5010560607).

Almost surely, 2^10021121213 is an apocalyptic number.

It is an amenable number.

10021121213 is a deficient number, since it is larger than the sum of its proper divisors (1).

10021121213 is an equidigital number, since it uses as much as digits as its factorization.

10021121213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 10021121213 its reverse (31212112001), we get a palindrome (41233233214).

The spelling of 10021121213 in words is "ten billion, twenty-one million, one hundred twenty-one thousand, two hundred thirteen".