1101101012221 has 12 divisors (see below), whose sum is σ = 1322191079040. Its totient is φ = 913355677080.

The previous prime is 1101101012201. The next prime is 1101101012227. The reversal of 1101101012221 is 1222101011011.

It is a happy number.

It is not a de Polignac number, because 1101101012221 - 2⁹ = 1101101011709 is a prime.

It is a super-2 number, since 2×1101101012221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101101012227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 362441211 + ... + 362444248.

It is an arithmetic number, because the mean of its divisors is an integer number (110182589920).

Almost surely, 2^{1101101012221} is an apocalyptic number.

It is an amenable number.

1101101012221 is a deficient number, since it is larger than the sum of its proper divisors (221090066819).

1101101012221 is an equidigital number, since it uses as much as digits as its factorization.

1101101012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724885504 (or 724885497 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1101101012221 its reverse (1222101011011), we get a palindrome (2323202023232).

The spelling of 1101101012221 in words is "one trillion, one hundred one billion, one hundred one million, twelve thousand, two hundred twenty-one".