20000220444293 has 2 divisors, whose sum is σ = 20000220444294. Its totient is φ = 20000220444292.

The previous prime is 20000220444157. The next prime is 20000220444311. The reversal of 20000220444293 is 39244402200002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18469004763364 + 1531215680929 = 4297558^2 + 1237423^2 .

It is a cyclic number.

It is not a de Polignac number, because 20000220444293 - 2⁸ = 20000220444037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20000220440293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000110222146 + 10000110222147.

It is an arithmetic number, because the mean of its divisors is an integer number (10000110222147).

Almost surely, 2^{20000220444293} is an apocalyptic number.

It is an amenable number.

20000220444293 is a deficient number, since it is larger than the sum of its proper divisors (1).

20000220444293 is an equidigital number, since it uses as much as digits as its factorization.

20000220444293 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 20000220444293 its reverse (39244402200002), we get a palindrome (59244622644295).

The spelling of 20000220444293 in words is "twenty trillion, two hundred twenty million, four hundred forty-four thousand, two hundred ninety-three".