20012122043 has 2 divisors, whose sum is σ = 20012122044. Its totient is φ = 20012122042.

The previous prime is 20012122007. The next prime is 20012122073. The reversal of 20012122043 is 34022121002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20012122043 - 2⁶ = 20012121979 is a prime.

It is not a weakly prime, because it can be changed into another prime (20012122073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006061021 + 10006061022.

It is an arithmetic number, because the mean of its divisors is an integer number (10006061022).

Almost surely, 2^20012122043 is an apocalyptic number.

20012122043 is a deficient number, since it is larger than the sum of its proper divisors (1).

20012122043 is an equidigital number, since it uses as much as digits as its factorization.

20012122043 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 20012122043 its reverse (34022121002), we get a palindrome (54034243045).

The spelling of 20012122043 in words is "twenty billion, twelve million, one hundred twenty-two thousand, forty-three".