21142033013 has 2 divisors, whose sum is σ = 21142033014. Its totient is φ = 21142033012.

The previous prime is 21142032997. The next prime is 21142033049. The reversal of 21142033013 is 31033024112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16802122129 + 4339910884 = 129623^2 + 65878^2 .

It is a cyclic number.

It is not a de Polignac number, because 21142033013 - 2⁴ = 21142032997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21142033313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10571016506 + 10571016507.

It is an arithmetic number, because the mean of its divisors is an integer number (10571016507).

Almost surely, 2^21142033013 is an apocalyptic number.

It is an amenable number.

21142033013 is a deficient number, since it is larger than the sum of its proper divisors (1).

21142033013 is an equidigital number, since it uses as much as digits as its factorization.

21142033013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21142033013 its reverse (31033024112), we get a palindrome (52175057125).

The spelling of 21142033013 in words is "twenty-one billion, one hundred forty-two million, thirty-three thousand, thirteen".