221020110299 has 4 divisors (see below), whose sum is σ = 230629680336. Its totient is φ = 211410540264.

The previous prime is 221020110257. The next prime is 221020110301. The reversal of 221020110299 is 992011020122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 992011020122 = 2 ⋅496005510061.

It is a cyclic number.

It is not a de Polignac number, because 221020110299 - 2⁸ = 221020110043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221020110599) 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, 4804784984 + ... + 4804785029.

It is an arithmetic number, because the mean of its divisors is an integer number (57657420084).

Almost surely, 2^221020110299 is an apocalyptic number.

221020110299 is a deficient number, since it is larger than the sum of its proper divisors (9609570037).

221020110299 is an equidigital number, since it uses as much as digits as its factorization.

221020110299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9609570036.

The product of its (nonzero) digits is 1296, while the sum is 29.

The spelling of 221020110299 in words is "two hundred twenty-one billion, twenty million, one hundred ten thousand, two hundred ninety-nine".