1220002001222 has 4 divisors (see below), whose sum is σ = 1830003001836. Its totient is φ = 610001000610.

The previous prime is 1220002001221. The next prime is 1220002001237. The reversal of 1220002001222 is 2221002000221.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 1220002001197 and 1220002001206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220002001221) 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 as a sum of consecutive naturals, namely, 305000500304 + ... + 305000500307.

It is an arithmetic number, because the mean of its divisors is an integer number (457500750459).

Almost surely, 2^{1220002001222} is an apocalyptic number.

1220002001222 is a deficient number, since it is larger than the sum of its proper divisors (610001000614).

1220002001222 is an equidigital number, since it uses as much as digits as its factorization.

1220002001222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610001000613.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 1220002001222 its reverse (2221002000221), we get a palindrome (3441004001443).

The spelling of 1220002001222 in words is "one trillion, two hundred twenty billion, two million, one thousand, two hundred twenty-two".