21311201011283 has 2 divisors, whose sum is σ = 21311201011284. Its totient is φ = 21311201011282.

The previous prime is 21311201011229. The next prime is 21311201011319. The reversal of 21311201011283 is 38211010211312.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21311201011283 - 2¹⁴ = 21311200994899 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (21311201010283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10655600505641 + 10655600505642.

It is an arithmetic number, because the mean of its divisors is an integer number (10655600505642).

Almost surely, 2^{21311201011283} is an apocalyptic number.

21311201011283 is a deficient number, since it is larger than the sum of its proper divisors (1).

21311201011283 is an equidigital number, since it uses as much as digits as its factorization.

21311201011283 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 26.

Adding to 21311201011283 its reverse (38211010211312), we get a palindrome (59522211222595).

The spelling of 21311201011283 in words is "twenty-one trillion, three hundred eleven billion, two hundred one million, eleven thousand, two hundred eighty-three".