1111121011321 has 4 divisors (see below), whose sum is σ = 1111214654352. Its totient is φ = 1111027368292.

The previous prime is 1111121011303. The next prime is 1111121011331. The reversal of 1111121011321 is 1231101211111.

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 1111121011321 - 2⁹ = 1111121010809 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1111121011295 and 1111121011304.

It is not an unprimeable number, because it can be changed into a prime (1111121011331) 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, 46803715 + ... + 46827448.

It is an arithmetic number, because the mean of its divisors is an integer number (277803663588).

Almost surely, 2^{1111121011321} is an apocalyptic number.

It is an amenable number.

1111121011321 is a deficient number, since it is larger than the sum of its proper divisors (93643031).

1111121011321 is an equidigital number, since it uses as much as digits as its factorization.

1111121011321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93643030.

The product of its (nonzero) digits is 12, while the sum is 16.

Adding to 1111121011321 its reverse (1231101211111), we get a palindrome (2342222222432).

The spelling of 1111121011321 in words is "one trillion, one hundred eleven billion, one hundred twenty-one million, eleven thousand, three hundred twenty-one".