1101101211221 has 8 divisors (see below), whose sum is σ = 1201252586688. Its totient is φ = 1000958380000.

The previous prime is 1101101211209. The next prime is 1101101211271. The reversal of 1101101211221 is 1221121011011.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1101101211221 - 2¹⁸ = 1101100949077 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1101101211196 and 1101101211205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101101211271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1865105 + ... + 2383446.

It is an arithmetic number, because the mean of its divisors is an integer number (150156573336).

Almost surely, 2^{1101101211221} is an apocalyptic number.

1101101211221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1101101211221 is a deficient number, since it is larger than the sum of its proper divisors (100151375467).

1101101211221 is a wasteful number, since it uses less digits than its factorization.

1101101211221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4272123.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1101101211221 its reverse (1221121011011), we get a palindrome (2322222222232).

The spelling of 1101101211221 in words is "one trillion, one hundred one billion, one hundred one million, two hundred eleven thousand, two hundred twenty-one".