12122212111012 has 6 divisors (see below), whose sum is σ = 21213871194278. Its totient is φ = 6061106055504.

The previous prime is 12122212111007. The next prime is 12122212111027. The reversal of 12122212111012 is 21011121222121.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 12120814398016 + 1397712996 = 3481496^2 + 37386^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1515276513873 + ... + 1515276513880.

Almost surely, 2^{12122212111012} is an apocalyptic number.

It is an amenable number.

12122212111012 is a deficient number, since it is larger than the sum of its proper divisors (9091659083266).

12122212111012 is a wasteful number, since it uses less digits than its factorization.

12122212111012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3030553027757 (or 3030553027755 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 12122212111012 its reverse (21011121222121), we get a palindrome (33133333333133).

It can be divided in two parts, 1212221 and 2111012, that added together give a palindrome (3323233).

The spelling of 12122212111012 in words is "twelve trillion, one hundred twenty-two billion, two hundred twelve million, one hundred eleven thousand, twelve".