11000020123 has 2 divisors, whose sum is σ = 11000020124. Its totient is φ = 11000020122.

The previous prime is 11000020081. The next prime is 11000020147. The reversal of 11000020123 is 32102000011.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11000020123 - 2¹³ = 11000011931 is a prime.

It is not a weakly prime, because it can be changed into another prime (11000020193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5500010061 + 5500010062.

It is an arithmetic number, because the mean of its divisors is an integer number (5500010062).

Almost surely, 2^11000020123 is an apocalyptic number.

11000020123 is a deficient number, since it is larger than the sum of its proper divisors (1).

11000020123 is an equidigital number, since it uses as much as digits as its factorization.

11000020123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 11000020123 its reverse (32102000011), we get a palindrome (43102020134).

The spelling of 11000020123 in words is "eleven billion, twenty thousand, one hundred twenty-three".