1220204022044 has 48 divisors (see below), whose sum is σ = 2444104877760. Its totient is φ = 522153008640.

The previous prime is 1220204022031. The next prime is 1220204022109. The reversal of 1220204022044 is 4402204020221.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 54440312 + ... + 54462720.

It is an arithmetic number, because the mean of its divisors is an integer number (50918851620).

Almost surely, 2^{1220204022044} is an apocalyptic number.

1220204022044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1220204022044 is an abundant number, since it is smaller than the sum of its proper divisors (1223900855716).

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

1220204022044 is a wasteful number, since it uses less digits than its factorization.

1220204022044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25278 (or 25276 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 23.

Adding to 1220204022044 its reverse (4402204020221), we get a palindrome (5622408042265).

The spelling of 1220204022044 in words is "one trillion, two hundred twenty billion, two hundred four million, twenty-two thousand, forty-four".