13142312021 has 2 divisors, whose sum is σ = 13142312022. Its totient is φ = 13142312020.

The previous prime is 13142311999. The next prime is 13142312063. The reversal of 13142312021 is 12021324131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8946511396 + 4195800625 = 94586^2 + 64775^2 .

It is a cyclic number.

It is not a de Polignac number, because 13142312021 - 2¹⁴ = 13142295637 is a prime.

It is a super-2 number, since 2×13142312021² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13142311984 and 13142312002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13145312021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6571156010 + 6571156011.

It is an arithmetic number, because the mean of its divisors is an integer number (6571156011).

Almost surely, 2^13142312021 is an apocalyptic number.

It is an amenable number.

13142312021 is a deficient number, since it is larger than the sum of its proper divisors (1).

13142312021 is an equidigital number, since it uses as much as digits as its factorization.

13142312021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 13142312021 its reverse (12021324131), we get a palindrome (25163636152).

The spelling of 13142312021 in words is "thirteen billion, one hundred forty-two million, three hundred twelve thousand, twenty-one".