1011200123 has 2 divisors, whose sum is σ = 1011200124. Its totient is φ = 1011200122.

The previous prime is 1011200117. The next prime is 1011200143. The reversal of 1011200123 is 3210021101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1011200123 - 2²⁴ = 994422907 is a prime.

It is not a weakly prime, because it can be changed into another prime (1011200143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505600061 + 505600062.

It is an arithmetic number, because the mean of its divisors is an integer number (505600062).

Almost surely, 2^1011200123 is an apocalyptic number.

1011200123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011200123 is an equidigital number, since it uses as much as digits as its factorization.

1011200123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1011200123 is about 31799.3729969633. The cubic root of 1011200123 is about 1003.7195223339.

Adding to 1011200123 its reverse (3210021101), we get a palindrome (4221221224).

The spelling of 1011200123 in words is "one billion, eleven million, two hundred thousand, one hundred twenty-three".