1100020121121 has 16 divisors (see below), whose sum is σ = 1493958469184. Its totient is φ = 719793290304.

The previous prime is 1100020121071. The next prime is 1100020121141. The reversal of 1100020121121 is 1211210200011.

It is not a de Polignac number, because 1100020121121 - 2¹⁵ = 1100020088353 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1100020121097 and 1100020121106.

It is not an unprimeable number, because it can be changed into a prime (1100020121141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9822910 + ... + 9934263.

It is an arithmetic number, because the mean of its divisors is an integer number (93372404324).

Almost surely, 2^{1100020121121} is an apocalyptic number.

It is an amenable number.

1100020121121 is a deficient number, since it is larger than the sum of its proper divisors (393938348063).

1100020121121 is a wasteful number, since it uses less digits than its factorization.

1100020121121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19757520.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1100020121121 its reverse (1211210200011), we get a palindrome (2311230321132).

The spelling of 1100020121121 in words is "one trillion, one hundred billion, twenty million, one hundred twenty-one thousand, one hundred twenty-one".