1100021220321 has 8 divisors (see below), whose sum is σ = 1467188642784. Its totient is φ = 733100639040.

The previous prime is 1100021220289. The next prime is 1100021220401. The reversal of 1100021220321 is 1230221200011.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1100021220321 - 2⁵ = 1100021220289 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1100021220321.

It is not an unprimeable number, because it can be changed into a prime (1100021220521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61699896 + ... + 61717721.

It is an arithmetic number, because the mean of its divisors is an integer number (183398580348).

Almost surely, 2^{1100021220321} is an apocalyptic number.

It is an amenable number.

1100021220321 is a deficient number, since it is larger than the sum of its proper divisors (367167422463).

1100021220321 is a wasteful number, since it uses less digits than its factorization.

1100021220321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123420591.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 1100021220321 its reverse (1230221200011), we get a palindrome (2330242420332).

The spelling of 1100021220321 in words is "one trillion, one hundred billion, twenty-one million, two hundred twenty thousand, three hundred twenty-one".