220111111009973 has 2 divisors, whose sum is σ = 220111111009974. Its totient is φ = 220111111009972.

The previous prime is 220111111009969. The next prime is 220111111010017. The reversal of 220111111009973 is 379900111111022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 169451479126609 + 50659631883364 = 13017353^2 + 7117558^2 .

It is a cyclic number.

It is not a de Polignac number, because 220111111009973 - 2² = 220111111009969 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220111111009903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110055555504986 + 110055555504987.

It is an arithmetic number, because the mean of its divisors is an integer number (110055555504987).

Almost surely, 2^{220111111009973} is an apocalyptic number.

It is an amenable number.

220111111009973 is a deficient number, since it is larger than the sum of its proper divisors (1).

220111111009973 is an equidigital number, since it uses as much as digits as its factorization.

220111111009973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 38.

The spelling of 220111111009973 in words is "two hundred twenty trillion, one hundred eleven billion, one hundred eleven million, nine thousand, nine hundred seventy-three".