1211122112212 has 12 divisors (see below), whose sum is σ = 2151097483360. Its totient is φ = 596522831256.

The previous prime is 1211122112203. The next prime is 1211122112323. The reversal of 1211122112212 is 2122112211121.

It is a happy number.

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 1211122112212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2259555912 + ... + 2259556447.

Almost surely, 2^{1211122112212} is an apocalyptic number.

It is an amenable number.

1211122112212 is a deficient number, since it is larger than the sum of its proper divisors (939975371148).

1211122112212 is a wasteful number, since it uses less digits than its factorization.

1211122112212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4519112430 (or 4519112428 counting only the distinct ones).

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

Adding to 1211122112212 its reverse (2122112211121), we get a palindrome (3333234323333).

The spelling of 1211122112212 in words is "one trillion, two hundred eleven billion, one hundred twenty-two million, one hundred twelve thousand, two hundred twelve".