1122221202120 has 96 divisors (see below), whose sum is σ = 3745792435320. Its totient is φ = 291170903040.

The previous prime is 1122221202073. The next prime is 1122221202121. The reversal of 1122221202120 is 212021222211.

It is a happy number.

1122221202120 is a `hidden beast` number, since 1 + 122 + 221 + 202 + 120 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1001588630436 + 120632571684 = 1000794^2 + 347322^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1122221202093 and 1122221202102.

It is not an unprimeable number, because it can be changed into a prime (1122221202121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42112101 + ... + 42138740.

Almost surely, 2^{1122221202120} is an apocalyptic number.

1122221202120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1122221202120 is an abundant number, since it is smaller than the sum of its proper divisors (2623571233200).

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

1122221202120 is a wasteful number, since it uses less digits than its factorization.

1122221202120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84250895 (or 84250888 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1122221202120 its reverse (212021222211), we get a palindrome (1334242424331).

The spelling of 1122221202120 in words is "one trillion, one hundred twenty-two billion, two hundred twenty-one million, two hundred two thousand, one hundred twenty".