21011322111293 has 2 divisors, whose sum is σ = 21011322111294. Its totient is φ = 21011322111292.

The previous prime is 21011322111277. The next prime is 21011322111317. The reversal of 21011322111293 is 39211122311012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18834714650404 + 2176607460889 = 4339898^2 + 1475333^2 .

It is a cyclic number.

It is not a de Polignac number, because 21011322111293 - 2⁴ = 21011322111277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21011322111233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10505661055646 + 10505661055647.

It is an arithmetic number, because the mean of its divisors is an integer number (10505661055647).

Almost surely, 2^{21011322111293} is an apocalyptic number.

It is an amenable number.

21011322111293 is a deficient number, since it is larger than the sum of its proper divisors (1).

21011322111293 is an equidigital number, since it uses as much as digits as its factorization.

21011322111293 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 29.

The spelling of 21011322111293 in words is "twenty-one trillion, eleven billion, three hundred twenty-two million, one hundred eleven thousand, two hundred ninety-three".