1121021102011 has 4 divisors (see below), whose sum is σ = 1121023606024. Its totient is φ = 1121018598000.

The previous prime is 1121021101987. The next prime is 1121021102029. The reversal of 1121021102011 is 1102011201211.

It is a happy number.

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 1121021102011 - 2⁵ = 1121021101979 is a prime.

It is a super-2 number, since 2×1121021102011² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121021101982 and 1121021102000.

It is not an unprimeable number, because it can be changed into a prime (1121021102111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 376305 + ... + 1543906.

It is an arithmetic number, because the mean of its divisors is an integer number (280255901506).

Almost surely, 2^{1121021102011} is an apocalyptic number.

1121021102011 is a deficient number, since it is larger than the sum of its proper divisors (2504013).

1121021102011 is an equidigital number, since it uses as much as digits as its factorization.

1121021102011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2504012.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1121021102011 its reverse (1102011201211), we get a palindrome (2223032303222).

The spelling of 1121021102011 in words is "one trillion, one hundred twenty-one billion, twenty-one million, one hundred two thousand, eleven".