12123021102 has 32 divisors (see below), whose sum is σ = 25545881088. Its totient is φ = 3827779296.

The previous prime is 12123021083. The next prime is 12123021109. The reversal of 12123021102 is 20112032121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12123021109) 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 in 15 ways as a sum of consecutive naturals, for example, 412233 + ... + 440660.

It is an arithmetic number, because the mean of its divisors is an integer number (798308784).

Almost surely, 2^12123021102 is an apocalyptic number.

12123021102 is an abundant number, since it is smaller than the sum of its proper divisors (13422859986).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12123021102 is a wasteful number, since it uses less digits than its factorization.

12123021102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853024.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 12123021102 its reverse (20112032121), we get a palindrome (32235053223).

The spelling of 12123021102 in words is "twelve billion, one hundred twenty-three million, twenty-one thousand, one hundred two".