1122202011220 has 24 divisors (see below), whose sum is σ = 2364153387624. Its totient is φ = 447446678016.

The previous prime is 1122202011173. The next prime is 1122202011223. The reversal of 1122202011220 is 221102022211.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 43632525456 + 1078569485764 = 208884^2 + 1038542^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1122202011194 and 1122202011203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122202011223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89626489 + ... + 89639008.

It is an arithmetic number, because the mean of its divisors is an integer number (98506391151).

Almost surely, 2^{1122202011220} is an apocalyptic number.

1122202011220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1122202011220 is an abundant number, since it is smaller than the sum of its proper divisors (1241951376404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1122202011220 is a wasteful number, since it uses less digits than its factorization.

1122202011220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179265819 (or 179265817 counting only the distinct ones).

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

Adding to 1122202011220 its reverse (221102022211), we get a palindrome (1343304033431).

The spelling of 1122202011220 in words is "one trillion, one hundred twenty-two billion, two hundred two million, eleven thousand, two hundred twenty".