123000021111 has 8 divisors (see below), whose sum is σ = 178909121664. Its totient is φ = 74545467320.

The previous prime is 123000021107. The next prime is 123000021121. The reversal of 123000021111 is 111120000321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123000021111 - 2² = 123000021107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123000021121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1863636651 + ... + 1863636716.

It is an arithmetic number, because the mean of its divisors is an integer number (22363640208).

Almost surely, 2^123000021111 is an apocalyptic number.

123000021111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

123000021111 is a deficient number, since it is larger than the sum of its proper divisors (55909100553).

123000021111 is a wasteful number, since it uses less digits than its factorization.

123000021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3727273381.

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

Adding to 123000021111 its reverse (111120000321), we get a palindrome (234120021432).

The spelling of 123000021111 in words is "one hundred twenty-three billion, twenty-one thousand, one hundred eleven".