220121011711 has 2 divisors, whose sum is σ = 220121011712. Its totient is φ = 220121011710.

The previous prime is 220121011699. The next prime is 220121011741. The reversal of 220121011711 is 117110121022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220121011711 - 2⁹ = 220121011199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220121011741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110060505855 + 110060505856.

It is an arithmetic number, because the mean of its divisors is an integer number (110060505856).

Almost surely, 2^220121011711 is an apocalyptic number.

220121011711 is a deficient number, since it is larger than the sum of its proper divisors (1).

220121011711 is an equidigital number, since it uses as much as digits as its factorization.

220121011711 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56, while the sum is 19.

Adding to 220121011711 its reverse (117110121022), we get a palindrome (337231132733).

The spelling of 220121011711 in words is "two hundred twenty billion, one hundred twenty-one million, eleven thousand, seven hundred eleven".