1222200021122 has 8 divisors (see below), whose sum is σ = 1835176493196. Its totient is φ = 610474523392.

The previous prime is 1222200021109. The next prime is 1222200021127. The reversal of 1222200021122 is 2211200022221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1115792928721 + 106407092401 = 1056311^2 + 326201^2 .

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

It is a super-2 number, since 2×1222200021122² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1222200021122.

It is not an unprimeable number, because it can be changed into a prime (1222200021127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 312741143 + ... + 312745050.

Almost surely, 2^{1222200021122} is an apocalyptic number.

1222200021122 is a deficient number, since it is larger than the sum of its proper divisors (612976472074).

1222200021122 is an equidigital number, since it uses as much as digits as its factorization.

1222200021122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625487172.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 1222200021122 its reverse (2211200022221), we get a palindrome (3433400043343).

The spelling of 1222200021122 in words is "one trillion, two hundred twenty-two billion, two hundred million, twenty-one thousand, one hundred twenty-two".