1121202221212 has 24 divisors (see below), whose sum is σ = 2077565175504. Its totient is φ = 527613549312.

The previous prime is 1121202221207. The next prime is 1121202221213. The reversal of 1121202221212 is 2121222021211.

It is a self number, because there is not a number n which added to its sum of digits gives 1121202221212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121202221213) 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, 3761478 + ... + 4048594.

It is an arithmetic number, because the mean of its divisors is an integer number (86565215646).

Almost surely, 2^{1121202221212} is an apocalyptic number.

It is an amenable number.

1121202221212 is a deficient number, since it is larger than the sum of its proper divisors (956362954292).

1121202221212 is a wasteful number, since it uses less digits than its factorization.

1121202221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344565 (or 344563 counting only the distinct ones).

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

Adding to 1121202221212 its reverse (2121222021211), we get a palindrome (3242424242423).

It can be divided in two parts, 112120 and 2221212, that added together give a palindrome (2333332).

The spelling of 1121202221212 in words is "one trillion, one hundred twenty-one billion, two hundred two million, two hundred twenty-one thousand, two hundred twelve".