12212100342 has 48 divisors (see below), whose sum is σ = 29265054000. Its totient is φ = 3656010816.

The previous prime is 12212100301. The next prime is 12212100347. The reversal of 12212100342 is 24300121221.

It is a happy number.

12212100342 is a `hidden beast` number, since 1 + 221 + 2 + 100 + 342 = 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 (12212100347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 696592 + ... + 713907.

It is an arithmetic number, because the mean of its divisors is an integer number (609688625).

Almost surely, 2^12212100342 is an apocalyptic number.

12212100342 is an abundant number, since it is smaller than the sum of its proper divisors (17052953658).

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

12212100342 is a wasteful number, since it uses less digits than its factorization.

12212100342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1410557 (or 1410554 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 12212100342 its reverse (24300121221), we get a palindrome (36512221563).

The spelling of 12212100342 in words is "twelve billion, two hundred twelve million, one hundred thousand, three hundred forty-two".