1101120201221 has 6 divisors (see below), whose sum is σ = 1137786015366. Its totient is φ = 1065600193800.

The previous prime is 1101120201199. The next prime is 1101120201227. The reversal of 1101120201221 is 1221020211011.

It can be written as a sum of positive squares in only one way, i.e., 761247525025 + 339872676196 = 872495^2 + 582986^2 .

It is not a de Polignac number, because 1101120201221 - 2⁶ = 1101120201157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1101120201196 and 1101120201205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101120201227) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 572902370 + ... + 572904291.

It is an arithmetic number, because the mean of its divisors is an integer number (189631002561).

Almost surely, 2^{1101120201221} is an apocalyptic number.

It is an amenable number.

1101120201221 is a deficient number, since it is larger than the sum of its proper divisors (36665814145).

1101120201221 is an equidigital number, since it uses as much as digits as its factorization.

1101120201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1145806723 (or 1145806692 counting only the distinct ones).

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

Adding to 1101120201221 its reverse (1221020211011), we get a palindrome (2322140412232).

The spelling of 1101120201221 in words is "one trillion, one hundred one billion, one hundred twenty million, two hundred one thousand, two hundred twenty-one".