1211222022212 has 24 divisors (see below), whose sum is σ = 2197307347200. Its totient is φ = 583507119776.

The previous prime is 1211222022211. The next prime is 1211222022217. The reversal of 1211222022212 is 2122202221121.

It is not an unprimeable number, because it can be changed into a prime (1211222022211) 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, 10843778 + ... + 10954905.

It is an arithmetic number, because the mean of its divisors is an integer number (91554472800).

Almost surely, 2^{1211222022212} is an apocalyptic number.

It is an amenable number.

1211222022212 is a deficient number, since it is larger than the sum of its proper divisors (986085324988).

1211222022212 is a wasteful number, since it uses less digits than its factorization.

1211222022212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21799195 (or 21799193 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 1211222022212 its reverse (2122202221121), we get a palindrome (3333424243333).

The spelling of 1211222022212 in words is "one trillion, two hundred eleven billion, two hundred twenty-two million, twenty-two thousand, two hundred twelve".