1201100023 has 2 divisors, whose sum is σ = 1201100024. Its totient is φ = 1201100022.

The previous prime is 1201099981. The next prime is 1201100027. The reversal of 1201100023 is 3200011021.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1201100023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1201099982 and 1201100009.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201100027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600550011 + 600550012.

It is an arithmetic number, because the mean of its divisors is an integer number (600550012).

Almost surely, 2^1201100023 is an apocalyptic number.

1201100023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201100023 is an equidigital number, since it uses as much as digits as its factorization.

1201100023 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.

The square root of 1201100023 is about 34656.8899787618. The cubic root of 1201100023 is about 1062.9831780334.

Adding to 1201100023 its reverse (3200011021), we get a palindrome (4401111044).

The spelling of 1201100023 in words is "one billion, two hundred one million, one hundred thousand, twenty-three".