20020220711 has 2 divisors, whose sum is σ = 20020220712. Its totient is φ = 20020220710.

The previous prime is 20020220681. The next prime is 20020220719. The reversal of 20020220711 is 11702202002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20020220711 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20020220711.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20020220719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010110355 + 10010110356.

It is an arithmetic number, because the mean of its divisors is an integer number (10010110356).

Almost surely, 2^20020220711 is an apocalyptic number.

20020220711 is a deficient number, since it is larger than the sum of its proper divisors (1).

20020220711 is an equidigital number, since it uses as much as digits as its factorization.

20020220711 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 17.

Adding to 20020220711 its reverse (11702202002), we get a palindrome (31722422713).

The spelling of 20020220711 in words is "twenty billion, twenty million, two hundred twenty thousand, seven hundred eleven".