20101002043 has 2 divisors, whose sum is σ = 20101002044. Its totient is φ = 20101002042.

The previous prime is 20101002037. The next prime is 20101002083. The reversal of 20101002043 is 34020010102.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20101002043 is a prime.

It is not a weakly prime, because it can be changed into another prime (20101002023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050501021 + 10050501022.

It is an arithmetic number, because the mean of its divisors is an integer number (10050501022).

Almost surely, 2^20101002043 is an apocalyptic number.

20101002043 is a deficient number, since it is larger than the sum of its proper divisors (1).

20101002043 is an equidigital number, since it uses as much as digits as its factorization.

20101002043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 20101002043 its reverse (34020010102), we get a palindrome (54121012145).

The spelling of 20101002043 in words is "twenty billion, one hundred one million, two thousand, forty-three".