20200012001243 has 2 divisors, whose sum is σ = 20200012001244. Its totient is φ = 20200012001242.

The previous prime is 20200012001153. The next prime is 20200012001251. The reversal of 20200012001243 is 34210021000202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20200012001243 - 2²² = 20200007806939 is a prime.

It is a super-2 number, since 2×20200012001243² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20200012001443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100006000621 + 10100006000622.

It is an arithmetic number, because the mean of its divisors is an integer number (10100006000622).

Almost surely, 2^{20200012001243} is an apocalyptic number.

20200012001243 is a deficient number, since it is larger than the sum of its proper divisors (1).

20200012001243 is an equidigital number, since it uses as much as digits as its factorization.

20200012001243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 20200012001243 its reverse (34210021000202), we get a palindrome (54410033001445).

The spelling of 20200012001243 in words is "twenty trillion, two hundred billion, twelve million, one thousand, two hundred forty-three".