12101223132 has 18 divisors (see below), whose sum is σ = 30589203008. Its totient is φ = 4033741032.

The previous prime is 12101223097. The next prime is 12101223133. The reversal of 12101223132 is 23132210121.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101223133) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 168072508 + ... + 168072579.

Almost surely, 2^12101223132 is an apocalyptic number.

12101223132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12101223132 is an abundant number, since it is smaller than the sum of its proper divisors (18487979876).

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

12101223132 is a wasteful number, since it uses less digits than its factorization.

12101223132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336145097 (or 336145092 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 12101223132 its reverse (23132210121), we get a palindrome (35233433253).

The spelling of 12101223132 in words is "twelve billion, one hundred one million, two hundred twenty-three thousand, one hundred thirty-two".