1211120222212 has 12 divisors (see below), whose sum is σ = 2119573299676. Its totient is φ = 605527850880.

The previous prime is 1211120222201. The next prime is 1211120222243. The reversal of 1211120222212 is 2122220211121.

It can be written as a sum of positive squares in 2 ways, for example, as 833320682496 + 377799539716 = 912864^2 + 614654^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1211120222212.

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, 7980489 + ... + 8130832.

Almost surely, 2^{1211120222212} is an apocalyptic number.

It is an amenable number.

1211120222212 is a deficient number, since it is larger than the sum of its proper divisors (908453077464).

1211120222212 is a wasteful number, since it uses less digits than its factorization.

1211120222212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16130118 (or 16130116 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 1211120222212 its reverse (2122220211121), we get a palindrome (3333340433333).

The spelling of 1211120222212 in words is "one trillion, two hundred eleven billion, one hundred twenty million, two hundred twenty-two thousand, two hundred twelve".