123020000011 has 4 divisors (see below), whose sum is σ = 123415563024. Its totient is φ = 122624437000.

The previous prime is 123019999987. The next prime is 123020000041. The reversal of 123020000011 is 110000020321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 123020000011 - 2¹¹ = 123019997963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123020000041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197781040 + ... + 197781661.

It is an arithmetic number, because the mean of its divisors is an integer number (30853890756).

Almost surely, 2^123020000011 is an apocalyptic number.

123020000011 is a deficient number, since it is larger than the sum of its proper divisors (395563013).

123020000011 is an equidigital number, since it uses as much as digits as its factorization.

123020000011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395563012.

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

Adding to 123020000011 its reverse (110000020321), we get a palindrome (233020020332).

The spelling of 123020000011 in words is "one hundred twenty-three billion, twenty million, eleven", and thus it is an aban number.