1220112221122 has 16 divisors (see below), whose sum is σ = 1857588838560. Its totient is φ = 600916966848.

The previous prime is 1220112221113. The next prime is 1220112221161. The reversal of 1220112221122 is 2211222110221.

It is a self number, because there is not a number n which added to its sum of digits gives 1220112221122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2222154 + ... + 2716282.

It is an arithmetic number, because the mean of its divisors is an integer number (116099302410).

Almost surely, 2^{1220112221122} is an apocalyptic number.

1220112221122 is a deficient number, since it is larger than the sum of its proper divisors (637476617438).

1220112221122 is a wasteful number, since it uses less digits than its factorization.

1220112221122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512625.

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

Adding to 1220112221122 its reverse (2211222110221), we get a palindrome (3431334331343).

The spelling of 1220112221122 in words is "one trillion, two hundred twenty billion, one hundred twelve million, two hundred twenty-one thousand, one hundred twenty-two".