1101309221 has 4 divisors (see below), whose sum is σ = 1101393600. Its totient is φ = 1101224844.

The previous prime is 1101309211. The next prime is 1101309233. The reversal of 1101309221 is 1229031011.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1101309221 - 2¹⁴ = 1101292837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1101309193 and 1101309202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101309211) 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, 17981 + ... + 50258.

It is an arithmetic number, because the mean of its divisors is an integer number (275348400).

Almost surely, 2^1101309221 is an apocalyptic number.

It is an amenable number.

1101309221 is a deficient number, since it is larger than the sum of its proper divisors (84379).

1101309221 is an equidigital number, since it uses as much as digits as its factorization.

1101309221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84378.

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 1101309221 is about 33185.9792834263. The cubic root of 1101309221 is about 1032.6894933293.

The spelling of 1101309221 in words is "one billion, one hundred one million, three hundred nine thousand, two hundred twenty-one".