1220221110122 has 16 divisors (see below), whose sum is σ = 2091842128320. Its totient is φ = 522943276608.

The previous prime is 1220221110041. The next prime is 1220221110139. The reversal of 1220221110122 is 2210111220221.

It is a self number, because there is not a number n which added to its sum of digits gives 1220221110122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200453 + ... + 1574999.

It is an arithmetic number, because the mean of its divisors is an integer number (130740133020).

Almost surely, 2^{1220221110122} is an apocalyptic number.

1220221110122 is a deficient number, since it is larger than the sum of its proper divisors (871621018198).

1220221110122 is a wasteful number, since it uses less digits than its factorization.

1220221110122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1437965.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1220221110122 its reverse (2210111220221), we get a palindrome (3430332330343).

The spelling of 1220221110122 in words is "one trillion, two hundred twenty billion, two hundred twenty-one million, one hundred ten thousand, one hundred twenty-two".