201220111373 has 2 divisors, whose sum is σ = 201220111374. Its totient is φ = 201220111372.

The previous prime is 201220111361. The next prime is 201220111451. The reversal of 201220111373 is 373111022102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 166201351684 + 35018759689 = 407678^2 + 187133^2 .

It is a cyclic number.

It is not a de Polignac number, because 201220111373 - 2¹⁴ = 201220094989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201220111273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100610055686 + 100610055687.

It is an arithmetic number, because the mean of its divisors is an integer number (100610055687).

Almost surely, 2^201220111373 is an apocalyptic number.

It is an amenable number.

201220111373 is a deficient number, since it is larger than the sum of its proper divisors (1).

201220111373 is an equidigital number, since it uses as much as digits as its factorization.

201220111373 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 23.

Adding to 201220111373 its reverse (373111022102), we get a palindrome (574331133475).

The spelling of 201220111373 in words is "two hundred one billion, two hundred twenty million, one hundred eleven thousand, three hundred seventy-three".