1122112121212 has 6 divisors (see below), whose sum is σ = 1963696212128. Its totient is φ = 561056060604.

The previous prime is 1122112121203. The next prime is 1122112121257. The reversal of 1122112121212 is 2121212112211.

It is a happy number.

It is a super-2 number, since 2×1122112121212² (a number of 25 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 1122112121212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140264015148 + ... + 140264015155.

Almost surely, 2^{1122112121212} is an apocalyptic number.

It is an amenable number.

1122112121212 is a deficient number, since it is larger than the sum of its proper divisors (841584090916).

1122112121212 is a wasteful number, since it uses less digits than its factorization.

1122112121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280528030307 (or 280528030305 counting only the distinct ones).

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

Adding to 1122112121212 its reverse (2121212112211), we get a palindrome (3243324233423).

Subtracting 1122112121212 from its reverse (2121212112211), we obtain a palindrome (999099990999).

The spelling of 1122112121212 in words is "one trillion, one hundred twenty-two billion, one hundred twelve million, one hundred twenty-one thousand, two hundred twelve".