1220232001329 has 80 divisors (see below), whose sum is σ = 2078067087360. Its totient is φ = 706966172640.

The previous prime is 1220232001321. The next prime is 1220232001343. The reversal of 1220232001329 is 9231002320221.

1220232001329 is a `hidden beast` number, since 1 + 2 + 202 + 320 + 0 + 132 + 9 = 666.

It is not a de Polignac number, because 1220232001329 - 2³ = 1220232001321 is a prime.

It is a super-2 number, since 2×1220232001329² (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 not an unprimeable number, because it can be changed into a prime (1220232001321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1461892 + ... + 2139530.

It is an arithmetic number, because the mean of its divisors is an integer number (25975838592).

Almost surely, 2^{1220232001329} is an apocalyptic number.

It is an amenable number.

1220232001329 is a deficient number, since it is larger than the sum of its proper divisors (857835086031).

1220232001329 is a wasteful number, since it uses less digits than its factorization.

1220232001329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677752 (or 677743 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The spelling of 1220232001329 in words is "one trillion, two hundred twenty billion, two hundred thirty-two million, one thousand, three hundred twenty-nine".