1220032123020 has 72 divisors (see below), whose sum is σ = 3701619383280. Its totient is φ = 325266710400.

The previous prime is 1220032122971. The next prime is 1220032123073. The reversal of 1220032123020 is 203212300221.

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 = 1220032122984 and 1220032123002.

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, 31 + ... + 1562070.

Almost surely, 2^{1220032123020} is an apocalyptic number.

1220032123020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220032123020 is an abundant number, since it is smaller than the sum of its proper divisors (2481587260260).

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

1220032123020 is a wasteful number, since it uses less digits than its factorization.

1220032123020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1566455 (or 1566450 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 1220032123020 its reverse (203212300221), we get a palindrome (1423244423241).

The spelling of 1220032123020 in words is "one trillion, two hundred twenty billion, thirty-two million, one hundred twenty-three thousand, twenty".