12121210332 has 216 divisors, whose sum is σ = 39917824128. Its totient is φ = 3148152480.

The previous prime is 12121210291. The next prime is 12121210333. The reversal of 12121210332 is 23301212121.

12121210332 is a `hidden beast` number, since 1 + 2 + 121 + 210 + 332 = 666.

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 (12121210333) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 815923 + ... + 830645.

Almost surely, 2^12121210332 is an apocalyptic number.

12121210332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12121210332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19958912064).

12121210332 is an abundant number, since it is smaller than the sum of its proper divisors (27796613796).

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

12121210332 is a wasteful number, since it uses less digits than its factorization.

12121210332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14771 (or 14746 counting only the distinct ones).

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

Adding to 12121210332 its reverse (23301212121), we get a palindrome (35422422453).

The spelling of 12121210332 in words is "twelve billion, one hundred twenty-one million, two hundred ten thousand, three hundred thirty-two".