1220120222022 has 48 divisors (see below), whose sum is σ = 3014414676000. Its totient is φ = 353337981696.

The previous prime is 1220120221973. The next prime is 1220120222063. The reversal of 1220120222022 is 2202220210221.

1220120222022 is a `hidden beast` number, since 1 + 220 + 1 + 202 + 220 + 22 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1220120221986 and 1220120222004.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 153354522 + ... + 153362477.

It is an arithmetic number, because the mean of its divisors is an integer number (62800305750).

Almost surely, 2^{1220120222022} is an apocalyptic number.

1220120222022 is an abundant number, since it is smaller than the sum of its proper divisors (1794294453978).

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

1220120222022 is a wasteful number, since it uses less digits than its factorization.

1220120222022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306717037 (or 306717034 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 1220120222022 its reverse (2202220210221), we get a palindrome (3422340432243).

The spelling of 1220120222022 in words is "one trillion, two hundred twenty billion, one hundred twenty million, two hundred twenty-two thousand, twenty-two".