1110221020121 has 4 divisors (see below), whose sum is σ = 1111124374500. Its totient is φ = 1109317665744.

The previous prime is 1110221020091. The next prime is 1110221020123. The reversal of 1110221020121 is 1210201220111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 826490083225 + 283730936896 = 909115^2 + 532664^2 .

It is a cyclic number.

It is not a de Polignac number, because 1110221020121 - 2¹⁴ = 1110221003737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1110221020096 and 1110221020105.

It is not an unprimeable number, because it can be changed into a prime (1110221020123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 451675346 + ... + 451677803.

It is an arithmetic number, because the mean of its divisors is an integer number (277781093625).

Almost surely, 2^{1110221020121} is an apocalyptic number.

It is an amenable number.

1110221020121 is a deficient number, since it is larger than the sum of its proper divisors (903354379).

1110221020121 is an equidigital number, since it uses as much as digits as its factorization.

1110221020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 903354378.

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

Adding to 1110221020121 its reverse (1210201220111), we get a palindrome (2320422240232).

The spelling of 1110221020121 in words is "one trillion, one hundred ten billion, two hundred twenty-one million, twenty thousand, one hundred twenty-one".