1220120622 has 48 divisors (see below), whose sum is σ = 3024060000. Its totient is φ = 348281856.

The previous prime is 1220120609. The next prime is 1220120653. The reversal of 1220120622 is 2260210221.

1220120622 is a `hidden beast` number, since 1 + 2 + 20 + 1 + 20 + 622 = 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 = 1220120595 and 1220120604.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 153498 + ... + 161250.

It is an arithmetic number, because the mean of its divisors is an integer number (63001250).

Almost surely, 2^1220120622 is an apocalyptic number.

1220120622 is an abundant number, since it is smaller than the sum of its proper divisors (1803939378).

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

1220120622 is a wasteful number, since it uses less digits than its factorization.

1220120622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9017 (or 9014 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1220120622 is about 34930.2250493752. The cubic root of 1220120622 is about 1068.5649443417.

Adding to 1220120622 its reverse (2260210221), we get a palindrome (3480330843).

It can be divided in two parts, 12201 and 20622, that added together give a palindrome (32823).

The spelling of 1220120622 in words is "one billion, two hundred twenty million, one hundred twenty thousand, six hundred twenty-two".