1220420422044 has 24 divisors (see below), whose sum is σ = 3164052946320. Its totient is φ = 406806807312.

The previous prime is 1220420422043. The next prime is 1220420422061. The reversal of 1220420422044 is 4402240240221.

1220420422044 is a `hidden beast` number, since 12 + 2 + 0 + 420 + 4 + 220 + 4 + 4 = 666.

It is a super-2 number, since 2×1220420422044² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1220420421999 and 1220420422017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220420422043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5650094439 + ... + 5650094654.

It is an arithmetic number, because the mean of its divisors is an integer number (131835539430).

Almost surely, 2^{1220420422044} is an apocalyptic number.

It is an amenable number.

1220420422044 is an abundant number, since it is smaller than the sum of its proper divisors (1943632524276).

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

1220420422044 is a wasteful number, since it uses less digits than its factorization.

1220420422044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11300189106 (or 11300189098 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 27.

Adding to 1220420422044 its reverse (4402240240221), we get a palindrome (5622660662265).

The spelling of 1220420422044 in words is "one trillion, two hundred twenty billion, four hundred twenty million, four hundred twenty-two thousand, forty-four".