1100020320121 has 8 divisors (see below), whose sum is σ = 1106504019720. Its totient is φ = 1093545710208.

The previous prime is 1100020320107. The next prime is 1100020320313. The reversal of 1100020320121 is 1210230200011.

It can be written as a sum of positive squares in 4 ways, for example, as 1051106805225 + 48913514896 = 1025235^2 + 221164^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1100020320121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1100020326121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2029596 + ... + 2513821.

It is an arithmetic number, because the mean of its divisors is an integer number (138313002465).

Almost surely, 2^{1100020320121} is an apocalyptic number.

It is an amenable number.

1100020320121 is a deficient number, since it is larger than the sum of its proper divisors (6483699599).

1100020320121 is a wasteful number, since it uses less digits than its factorization.

1100020320121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4544843.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 1100020320121 its reverse (1210230200011), we get a palindrome (2310250520132).

The spelling of 1100020320121 in words is "one trillion, one hundred billion, twenty million, three hundred twenty thousand, one hundred twenty-one".