20142142000021 has 2 divisors, whose sum is σ = 20142142000022. Its totient is φ = 20142142000020.

The previous prime is 20142142000009. The next prime is 20142142000067. The reversal of 20142142000021 is 12000024124102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20046528702225 + 95613297796 = 4477335^2 + 309214^2 .

It is a cyclic number.

It is not a de Polignac number, because 20142142000021 - 2²⁹ = 20141605129109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20142142000921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10071071000010 + 10071071000011.

It is an arithmetic number, because the mean of its divisors is an integer number (10071071000011).

Almost surely, 2^{20142142000021} is an apocalyptic number.

It is an amenable number.

20142142000021 is a deficient number, since it is larger than the sum of its proper divisors (1).

20142142000021 is an equidigital number, since it uses as much as digits as its factorization.

20142142000021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 20142142000021 its reverse (12000024124102), we get a palindrome (32142166124123).

The spelling of 20142142000021 in words is "twenty trillion, one hundred forty-two billion, one hundred forty-two million, twenty-one", and thus it is an aban number.