1100020120121 has 8 divisors (see below), whose sum is σ = 1184746277064. Its totient is φ = 1015309566720.

The previous prime is 1100020120061. The next prime is 1100020120141. The reversal of 1100020120121 is 1210210200011.

It can be written as a sum of positive squares in 4 ways, for example, as 49782534400 + 1050237585721 = 223120^2 + 1024811^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1100020120121 - 2¹⁸ = 1100019857977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1100020120141) 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, 3754256 + ... + 4036641.

It is an arithmetic number, because the mean of its divisors is an integer number (148093284633).

Almost surely, 2^{1100020120121} is an apocalyptic number.

It is an amenable number.

1100020120121 is a deficient number, since it is larger than the sum of its proper divisors (84726156943).

1100020120121 is a wasteful number, since it uses less digits than its factorization.

1100020120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7801771.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1100020120121 its reverse (1210210200011), we get a palindrome (2310230320132).

The spelling of 1100020120121 in words is "one trillion, one hundred billion, twenty million, one hundred twenty thousand, one hundred twenty-one".