1101320001221 has 4 divisors (see below), whose sum is σ = 1201440001344. Its totient is φ = 1001200001100.

The previous prime is 1101320001209. The next prime is 1101320001227. The reversal of 1101320001221 is 1221000231011.

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 1101320001221 - 2¹⁴ = 1101319984837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1101320001196 and 1101320001205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101320001227) 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, 50060000045 + ... + 50060000066.

It is an arithmetic number, because the mean of its divisors is an integer number (300360000336).

Almost surely, 2^{1101320001221} is an apocalyptic number.

1101320001221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1101320001221 is a deficient number, since it is larger than the sum of its proper divisors (100120000123).

1101320001221 is a wasteful number, since it uses less digits than its factorization.

1101320001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100120000122.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 1101320001221 its reverse (1221000231011), we get a palindrome (2322320232232).

The spelling of 1101320001221 in words is "one trillion, one hundred one billion, three hundred twenty million, one thousand, two hundred twenty-one".