1021232020013 has 2 divisors, whose sum is σ = 1021232020014. Its totient is φ = 1021232020012.

The previous prime is 1021232020007. The next prime is 1021232020027. The reversal of 1021232020013 is 3100202321201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 648053980324 + 373178039689 = 805018^2 + 610883^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021232020013 - 2¹⁸ = 1021231757869 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1021232019973 and 1021232020000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021232020063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510616010006 + 510616010007.

It is an arithmetic number, because the mean of its divisors is an integer number (510616010007).

Almost surely, 2^{1021232020013} is an apocalyptic number.

It is an amenable number.

1021232020013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021232020013 is an equidigital number, since it uses as much as digits as its factorization.

1021232020013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 1021232020013 its reverse (3100202321201), we get a palindrome (4121434341214).

The spelling of 1021232020013 in words is "one trillion, twenty-one billion, two hundred thirty-two million, twenty thousand, thirteen".