1111121020121 has 8 divisors (see below), whose sum is σ = 1270989445440. Its totient is φ = 951536807568.

The previous prime is 1111121020109. The next prime is 1111121020159. The reversal of 1111121020121 is 1210201211111.

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 1111121020121 - 2¹⁰ = 1111121019097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1111121020096 and 1111121020105.

It is not an unprimeable number, because it can be changed into a prime (1111121020181) 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, 71044811 + ... + 71060448.

It is an arithmetic number, because the mean of its divisors is an integer number (158873680680).

Almost surely, 2^{1111121020121} is an apocalyptic number.

It is an amenable number.

1111121020121 is a deficient number, since it is larger than the sum of its proper divisors (159868425319).

1111121020121 is a wasteful number, since it uses less digits than its factorization.

1111121020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142106383.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1111121020121 its reverse (1210201211111), we get a palindrome (2321322231232).

It can be divided in two parts, 1111 and 121020121, that multiplied together give a palindrome (134453354431).

The spelling of 1111121020121 in words is "one trillion, one hundred eleven billion, one hundred twenty-one million, twenty thousand, one hundred twenty-one".