20012220047 has 2 divisors, whose sum is σ = 20012220048. Its totient is φ = 20012220046.

The previous prime is 20012220023. The next prime is 20012220049. The reversal of 20012220047 is 74002221002.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20012220047 - 2²⁰ = 20011171471 is a prime.

Together with 20012220049, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20012220049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006110023 + 10006110024.

It is an arithmetic number, because the mean of its divisors is an integer number (10006110024).

Almost surely, 2^20012220047 is an apocalyptic number.

20012220047 is a deficient number, since it is larger than the sum of its proper divisors (1).

20012220047 is an equidigital number, since it uses as much as digits as its factorization.

20012220047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 20.

Adding to 20012220047 its reverse (74002221002), we get a palindrome (94014441049).

The spelling of 20012220047 in words is "twenty billion, twelve million, two hundred twenty thousand, forty-seven".