1220888588652 has 48 divisors (see below), whose sum is σ = 3165691576320. Its totient is φ = 406908237456.

The previous prime is 1220888588593. The next prime is 1220888588653. The reversal of 1220888588652 is 2568858880221.

It is a self number, because there is not a number n which added to its sum of digits gives 1220888588652.

It is not an unprimeable number, because it can be changed into a prime (1220888588653) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 53653 + ... + 1563539.

It is an arithmetic number, because the mean of its divisors is an integer number (65951907840).

Almost surely, 2^{1220888588652} is an apocalyptic number.

1220888588652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1220888588652 is an abundant number, since it is smaller than the sum of its proper divisors (1944802987668).

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

1220888588652 is a wasteful number, since it uses less digits than its factorization.

1220888588652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1517387 (or 1517379 counting only the distinct ones).

The product of its (nonzero) digits is 39321600, while the sum is 63.

The spelling of 1220888588652 in words is "one trillion, two hundred twenty billion, eight hundred eighty-eight million, five hundred eighty-eight thousand, six hundred fifty-two".