12101332212 has 18 divisors (see below), whose sum is σ = 30589478738. Its totient is φ = 4033777392.

The previous prime is 12101332169. The next prime is 12101332249. The reversal of 12101332212 is 21223310121.

12101332212 is a `hidden beast` number, since 121 + 0 + 1 + 332 + 212 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11162767716 + 938564496 = 105654^2 + 30636^2 .

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 an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 168074023 + ... + 168074094.

Almost surely, 2^12101332212 is an apocalyptic number.

12101332212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12101332212 is an abundant number, since it is smaller than the sum of its proper divisors (18488146526).

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

12101332212 is a wasteful number, since it uses less digits than its factorization.

12101332212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336148127 (or 336148122 counting only the distinct ones).

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

Adding to 12101332212 its reverse (21223310121), we get a palindrome (33324642333).

The spelling of 12101332212 in words is "twelve billion, one hundred one million, three hundred thirty-two thousand, two hundred twelve".