12102021211212 has 36 divisors (see below), whose sum is σ = 30591342444936. Its totient is φ = 4033990961280.

The previous prime is 12102021211211. The next prime is 12102021211243. The reversal of 12102021211212 is 21211212020121.

12102021211212 is a `hidden beast` number, since 1 + 210 + 20 + 212 + 11 + 212 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is not an unprimeable number, because it can be changed into a prime (12102021211211) 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 11 ways as a sum of consecutive naturals, for example, 11484783 + ... + 12494169.

Almost surely, 2^{12102021211212} is an apocalyptic number.

12102021211212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12102021211212 is an abundant number, since it is smaller than the sum of its proper divisors (18489321233724).

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

12102021211212 is a wasteful number, since it uses less digits than its factorization.

12102021211212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1342438 (or 1342433 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12102021211212 its reverse (21211212020121), we get a palindrome (33313233231333).

The spelling of 12102021211212 in words is "twelve trillion, one hundred two billion, twenty-one million, two hundred eleven thousand, two hundred twelve".