201123111220103 has 2 divisors, whose sum is σ = 201123111220104. Its totient is φ = 201123111220102.

The previous prime is 201123111220093. The next prime is 201123111220127. The reversal of 201123111220103 is 301022111321102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201123111220103 - 2⁸ = 201123111219847 is a prime.

It is a super-2 number, since 2×201123111220103² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201123111220303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100561555610051 + 100561555610052.

It is an arithmetic number, because the mean of its divisors is an integer number (100561555610052).

Almost surely, 2^{201123111220103} is an apocalyptic number.

201123111220103 is a deficient number, since it is larger than the sum of its proper divisors (1).

201123111220103 is an equidigital number, since it uses as much as digits as its factorization.

201123111220103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 201123111220103 its reverse (301022111321102), we get a palindrome (502145222541205).

The spelling of 201123111220103 in words is "two hundred one trillion, one hundred twenty-three billion, one hundred eleven million, two hundred twenty thousand, one hundred three".