123012011102 has 4 divisors (see below), whose sum is σ = 184518016656. Its totient is φ = 61506005550.

The previous prime is 123012011099. The next prime is 123012011117. The reversal of 123012011102 is 201110210321.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30753002774 + ... + 30753002777.

It is an arithmetic number, because the mean of its divisors is an integer number (46129504164).

Almost surely, 2^123012011102 is an apocalyptic number.

123012011102 is a deficient number, since it is larger than the sum of its proper divisors (61506005554).

123012011102 is an equidigital number, since it uses as much as digits as its factorization.

123012011102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61506005553.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 123012011102 its reverse (201110210321), we get a palindrome (324122221423).

The spelling of 123012011102 in words is "one hundred twenty-three billion, twelve million, eleven thousand, one hundred two".