1100000020121 has 8 divisors (see below), whose sum is σ = 1112358977184. Its totient is φ = 1087661854080.

The previous prime is 1100000020069. The next prime is 1100000020123. The reversal of 1100000020121 is 1210200000011.

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 1100000020121 - 2¹⁸ = 1099999757977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1100000020099 and 1100000020108.

It is not an unprimeable number, because it can be changed into a prime (1100000020123) 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, 5091335 + ... + 5302988.

It is an arithmetic number, because the mean of its divisors is an integer number (139044872148).

Almost surely, 2^{1100000020121} is an apocalyptic number.

It is an amenable number.

1100000020121 is a deficient number, since it is larger than the sum of its proper divisors (12358957063).

1100000020121 is a wasteful number, since it uses less digits than its factorization.

1100000020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10395511.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 1100000020121 its reverse (1210200000011), we get a palindrome (2310200020132).

The spelling of 1100000020121 in words is "one trillion, one hundred billion, twenty thousand, one hundred twenty-one".