38212121212 has 24 divisors (see below), whose sum is σ = 70815832416. Its totient is φ = 17979376128.

The previous prime is 38212121197. The next prime is 38212121219. The reversal of 38212121212 is 21212121283.

It is a happy number.

38212121212 is a modest number, since divided by 121212 gives 38212 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38212121219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 434608 + ... + 515080.

It is an arithmetic number, because the mean of its divisors is an integer number (2950659684).

Almost surely, 2^38212121212 is an apocalyptic number.

It is an amenable number.

38212121212 is a deficient number, since it is larger than the sum of its proper divisors (32603711204).

38212121212 is a wasteful number, since it uses less digits than its factorization.

38212121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87477 (or 87475 counting only the distinct ones).

The product of its digits is 768, while the sum is 25.

Adding to 38212121212 its reverse (21212121283), we get a palindrome (59424242495).

The spelling of 38212121212 in words is "thirty-eight billion, two hundred twelve million, one hundred twenty-one thousand, two hundred twelve".