1220122211122 has 16 divisors (see below), whose sum is σ = 1837161820800. Its totient is φ = 607735489680.

The previous prime is 1220122211089. The next prime is 1220122211123. The reversal of 1220122211122 is 2211122210221.

It is a self number, because there is not a number n which added to its sum of digits gives 1220122211122.

It is not an unprimeable number, because it can be changed into a prime (1220122211123) 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, 4429404 + ... + 4696792.

It is an arithmetic number, because the mean of its divisors is an integer number (114822613800).

Almost surely, 2^{1220122211122} is an apocalyptic number.

1220122211122 is a deficient number, since it is larger than the sum of its proper divisors (617039609678).

1220122211122 is a wasteful number, since it uses less digits than its factorization.

1220122211122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276081.

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

Adding to 1220122211122 its reverse (2211122210221), we get a palindrome (3431244421343).

Subtracting 1220122211122 from its reverse (2211122210221), we obtain a palindrome (990999999099).

The spelling of 1220122211122 in words is "one trillion, two hundred twenty billion, one hundred twenty-two million, two hundred eleven thousand, one hundred twenty-two".