1220220221122 has 24 divisors (see below), whose sum is σ = 2222091601344. Its totient is φ = 492189667392.

The previous prime is 1220220221113. The next prime is 1220220221141. The reversal of 1220220221122 is 2211220220221.

It is a self number, because there is not a number n which added to its sum of digits gives 1220220221122.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 150789358 + ... + 150797449.

It is an arithmetic number, because the mean of its divisors is an integer number (92587150056).

Almost surely, 2^{1220220221122} is an apocalyptic number.

1220220221122 is a deficient number, since it is larger than the sum of its proper divisors (1001871380222).

1220220221122 is a wasteful number, since it uses less digits than its factorization.

1220220221122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301586850 (or 301586833 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 1220220221122 its reverse (2211220220221), we get a palindrome (3431440441343).

Subtracting 1220220221122 from its reverse (2211220220221), we obtain a palindrome (990999999099).

The spelling of 1220220221122 in words is "one trillion, two hundred twenty billion, two hundred twenty million, two hundred twenty-one thousand, one hundred twenty-two".