1220021201122 has 8 divisors (see below), whose sum is σ = 1830182967900. Its totient is φ = 609960211824.

The previous prime is 1220021201041. The next prime is 1220021201123. The reversal of 1220021201122 is 2211021200221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 915870054121 + 304151147001 = 957011^2 + 551499^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1220021201096 and 1220021201105.

It is not an unprimeable number, because it can be changed into a prime (1220021201123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25164097 + ... + 25212532.

Almost surely, 2^{1220021201122} is an apocalyptic number.

1220021201122 is a deficient number, since it is larger than the sum of its proper divisors (610161766778).

1220021201122 is a wasteful number, since it uses less digits than its factorization.

1220021201122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50388740.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1220021201122 its reverse (2211021200221), we get a palindrome (3431042401343).

Subtracting 1220021201122 from its reverse (2211021200221), we obtain a palindrome (990999999099).

The spelling of 1220021201122 in words is "one trillion, two hundred twenty billion, twenty-one million, two hundred one thousand, one hundred twenty-two".