1101221220101 has 4 divisors (see below), whose sum is σ = 1101229154304. Its totient is φ = 1101213285900.

The previous prime is 1101221220091. The next prime is 1101221220149. The reversal of 1101221220101 is 1010221221011.

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 1101221220101 - 2³⁰ = 1100147478277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101221520101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3755135 + ... + 4037756.

It is an arithmetic number, because the mean of its divisors is an integer number (275307288576).

Almost surely, 2^{1101221220101} is an apocalyptic number.

It is an amenable number.

1101221220101 is a deficient number, since it is larger than the sum of its proper divisors (7934203).

1101221220101 is an equidigital number, since it uses as much as digits as its factorization.

1101221220101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7934202.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1101221220101 its reverse (1010221221011), we get a palindrome (2111442441112).

The spelling of 1101221220101 in words is "one trillion, one hundred one billion, two hundred twenty-one million, two hundred twenty thousand, one hundred one".