1101210110221 has 32 divisors (see below), whose sum is σ = 1218557529728. Its totient is φ = 988731152640.

The previous prime is 1101210110213. The next prime is 1101210110227. The reversal of 1101210110221 is 1220110121011.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1101210110221 - 2³ = 1101210110213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101210110227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 146687350 + ... + 146694856.

It is an arithmetic number, because the mean of its divisors is an integer number (38079922804).

Almost surely, 2^{1101210110221} is an apocalyptic number.

It is an amenable number.

1101210110221 is a deficient number, since it is larger than the sum of its proper divisors (117347419507).

1101210110221 is a wasteful number, since it uses less digits than its factorization.

1101210110221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8621.

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

Adding to 1101210110221 its reverse (1220110121011), we get a palindrome (2321320231232).

The spelling of 1101210110221 in words is "one trillion, one hundred one billion, two hundred ten million, one hundred ten thousand, two hundred twenty-one".