111202002220221 has 80 divisors (see below), whose sum is σ = 190761411709440. Its totient is φ = 63846185122080.

The previous prime is 111202002220219. The next prime is 111202002220241. The reversal of 111202002220221 is 122022200202111.

It is a happy number.

111202002220221 is a `hidden beast` number, since 1 + 1 + 1 + 20 + 200 + 2 + 220 + 221 = 666.

It is not a de Polignac number, because 111202002220221 - 2¹ = 111202002220219 is a prime.

It is a super-3 number, since 3×111202002220221³ (a number of 43 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111202002220194 and 111202002220203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111202002220241) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 763137256 + ... + 763282958.

It is an arithmetic number, because the mean of its divisors is an integer number (2384517646368).

Almost surely, 2^{111202002220221} is an apocalyptic number.

111202002220221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111202002220221 is a deficient number, since it is larger than the sum of its proper divisors (79559409489219).

111202002220221 is a wasteful number, since it uses less digits than its factorization.

111202002220221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190828 (or 190819 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 111202002220221 its reverse (122022200202111), we get a palindrome (233224202422332).

The spelling of 111202002220221 in words is "one hundred eleven trillion, two hundred two billion, two million, two hundred twenty thousand, two hundred twenty-one".