21021231131083 has 2 divisors, whose sum is σ = 21021231131084. Its totient is φ = 21021231131082.

The previous prime is 21021231131081. The next prime is 21021231131119. The reversal of 21021231131083 is 38013113212012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21021231131083 - 2¹ = 21021231131081 is a prime.

Together with 21021231131081, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (21021231131081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10510615565541 + 10510615565542.

It is an arithmetic number, because the mean of its divisors is an integer number (10510615565542).

Almost surely, 2^{21021231131083} is an apocalyptic number.

21021231131083 is a deficient number, since it is larger than the sum of its proper divisors (1).

21021231131083 is an equidigital number, since it uses as much as digits as its factorization.

21021231131083 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

Adding to 21021231131083 its reverse (38013113212012), we get a palindrome (59034344343095).

The spelling of 21021231131083 in words is "twenty-one trillion, twenty-one billion, two hundred thirty-one million, one hundred thirty-one thousand, eighty-three".