1020110120221 has 4 divisors (see below), whose sum is σ = 1041814590912. Its totient is φ = 998405649532.

The previous prime is 1020110120219. The next prime is 1020110120369. The reversal of 1020110120221 is 1220210110201.

1020110120221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1020110120221 - 2¹ = 1020110120219 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 (1020110120521) 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, 10852235275 + ... + 10852235368.

It is an arithmetic number, because the mean of its divisors is an integer number (260453647728).

Almost surely, 2^{1020110120221} is an apocalyptic number.

It is an amenable number.

1020110120221 is a deficient number, since it is larger than the sum of its proper divisors (21704470691).

1020110120221 is an equidigital number, since it uses as much as digits as its factorization.

1020110120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21704470690.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1020110120221 its reverse (1220210110201), we get a palindrome (2240320230422).

The spelling of 1020110120221 in words is "one trillion, twenty billion, one hundred ten million, one hundred twenty thousand, two hundred twenty-one".