1111020020221 has 8 divisors (see below), whose sum is σ = 1146877804800. Its totient is φ = 1075163387520.

The previous prime is 1111020020213. The next prime is 1111020020239. The reversal of 1111020020221 is 1220200201111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1111020020221 - 2³ = 1111020020213 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 (1111020024221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1947885 + ... + 2452813.

It is an arithmetic number, because the mean of its divisors is an integer number (143359725600).

Almost surely, 2^{1111020020221} is an apocalyptic number.

It is an amenable number.

1111020020221 is a deficient number, since it is larger than the sum of its proper divisors (35857784579).

1111020020221 is an equidigital number, since it uses as much as digits as its factorization.

1111020020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575939.

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

Adding to 1111020020221 its reverse (1220200201111), we get a palindrome (2331220221332).

The spelling of 1111020020221 in words is "one trillion, one hundred eleven billion, twenty million, twenty thousand, two hundred twenty-one".