1111210121011 has 4 divisors (see below), whose sum is σ = 1111245828472. Its totient is φ = 1111174413552.

The previous prime is 1111210120987. The next prime is 1111210121023. The reversal of 1111210121011 is 1101210121111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1111210121011 - 2²¹ = 1111208023859 is a prime.

It is a super-3 number, since 3×1111210121011³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1111210120982 and 1111210121000.

It is not an unprimeable number, because it can be changed into a prime (1111210121071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17807010 + ... + 17869303.

It is an arithmetic number, because the mean of its divisors is an integer number (277811457118).

Almost surely, 2^{1111210121011} is an apocalyptic number.

1111210121011 is a deficient number, since it is larger than the sum of its proper divisors (35707461).

1111210121011 is an equidigital number, since it uses as much as digits as its factorization.

1111210121011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35707460.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 1111210121011 its reverse (1101210121111), we get a palindrome (2212420242122).

The spelling of 1111210121011 in words is "one trillion, one hundred eleven billion, two hundred ten million, one hundred twenty-one thousand, eleven".