1121101111021 has 4 divisors (see below), whose sum is σ = 1125363853152. Its totient is φ = 1116838368892.

The previous prime is 1121101110991. The next prime is 1121101111049. The reversal of 1121101111021 is 1201111011211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1121101111021 - 2¹³ = 1121101102829 is a prime.

It is a super-2 number, since 2×1121101111021² (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 = 1121101110992 and 1121101111010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121101111421) 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, 2131370671 + ... + 2131371196.

It is an arithmetic number, because the mean of its divisors is an integer number (281340963288).

Almost surely, 2^{1121101111021} is an apocalyptic number.

It is an amenable number.

1121101111021 is a deficient number, since it is larger than the sum of its proper divisors (4262742131).

1121101111021 is an equidigital number, since it uses as much as digits as its factorization.

1121101111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4262742130.

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

Adding to 1121101111021 its reverse (1201111011211), we get a palindrome (2322212122232).

The spelling of 1121101111021 in words is "one trillion, one hundred twenty-one billion, one hundred one million, one hundred eleven thousand, twenty-one".