1021311352123 has 2 divisors, whose sum is σ = 1021311352124. Its totient is φ = 1021311352122.

The previous prime is 1021311352051. The next prime is 1021311352133. The reversal of 1021311352123 is 3212531131201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1021311352123 - 2²¹ = 1021309254971 is a prime.

It is not a weakly prime, because it can be changed into another prime (1021311352133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510655676061 + 510655676062.

It is an arithmetic number, because the mean of its divisors is an integer number (510655676062).

Almost surely, 2^{1021311352123} is an apocalyptic number.

1021311352123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021311352123 is an equidigital number, since it uses as much as digits as its factorization.

1021311352123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 25.

Adding to 1021311352123 its reverse (3212531131201), we get a palindrome (4233842483324).

The spelling of 1021311352123 in words is "one trillion, twenty-one billion, three hundred eleven million, three hundred fifty-two thousand, one hundred twenty-three".