1111012212121 has 8 divisors (see below), whose sum is σ = 1272272792000. Its totient is φ = 950387769648.

The previous prime is 1111012212097. The next prime is 1111012212151. The reversal of 1111012212121 is 1212122101111.

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 1111012212121 - 2¹³ = 1111012203929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1111012212095 and 1111012212104.

It is not an unprimeable number, because it can be changed into a prime (1111012212151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159030606 + ... + 159037591.

It is an arithmetic number, because the mean of its divisors is an integer number (159034099000).

Almost surely, 2^{1111012212121} is an apocalyptic number.

It is an amenable number.

1111012212121 is a deficient number, since it is larger than the sum of its proper divisors (161260579879).

1111012212121 is an equidigital number, since it uses as much as digits as its factorization.

1111012212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318068703.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 1111012212121 its reverse (1212122101111), we get a palindrome (2323134313232).

The spelling of 1111012212121 in words is "one trillion, one hundred eleven billion, twelve million, two hundred twelve thousand, one hundred twenty-one".