1220002122122 has 8 divisors (see below), whose sum is σ = 2091432209376. Its totient is φ = 522858052332.

The previous prime is 1220002122103. The next prime is 1220002122137. The reversal of 1220002122122 is 2212212000221.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1220002122122.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 43571504348 + ... + 43571504375.

It is an arithmetic number, because the mean of its divisors is an integer number (261429026172).

Almost surely, 2^{1220002122122} is an apocalyptic number.

1220002122122 is a deficient number, since it is larger than the sum of its proper divisors (871430087254).

1220002122122 is an equidigital number, since it uses as much as digits as its factorization.

1220002122122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87143008732.

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

Adding to 1220002122122 its reverse (2212212000221), we get a palindrome (3432214122343).

The spelling of 1220002122122 in words is "one trillion, two hundred twenty billion, two million, one hundred twenty-two thousand, one hundred twenty-two".