1111021012121 has 8 divisors (see below), whose sum is σ = 1112961797280. Its totient is φ = 1109081671488.

The previous prime is 1111021012103. The next prime is 1111021012181. The reversal of 1111021012121 is 1212101201111.

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 1111021012121 - 2³⁸ = 836143105177 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1111021012096 and 1111021012105.

It is not an unprimeable number, because it can be changed into a prime (1111021012181) 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, 1184225 + ... + 1903793.

It is an arithmetic number, because the mean of its divisors is an integer number (139120224660).

Almost surely, 2^{1111021012121} is an apocalyptic number.

It is an amenable number.

1111021012121 is a deficient number, since it is larger than the sum of its proper divisors (1940785159).

1111021012121 is an equidigital number, since it uses as much as digits as its factorization.

1111021012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722263.

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

Adding to 1111021012121 its reverse (1212101201111), we get a palindrome (2323122213232).

The spelling of 1111021012121 in words is "one trillion, one hundred eleven billion, twenty-one million, twelve thousand, one hundred twenty-one".