221120200021 has 8 divisors (see below), whose sum is σ = 252711774720. Its totient is φ = 189529369008.

The previous prime is 221120200009. The next prime is 221120200033. The reversal of 221120200021 is 120002021122.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (221120200009) and next prime (221120200033).

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

It is not a de Polignac number, because 221120200021 - 2³¹ = 218972716373 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221120199974 and 221120200010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221120200001) 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, 799260 + ... + 1039738.

It is an arithmetic number, because the mean of its divisors is an integer number (31588971840).

Almost surely, 2^221120200021 is an apocalyptic number.

It is an amenable number.

221120200021 is a deficient number, since it is larger than the sum of its proper divisors (31591574699).

221120200021 is a wasteful number, since it uses less digits than its factorization.

221120200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371843.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 221120200021 its reverse (120002021122), we get a palindrome (341122221143).

The spelling of 221120200021 in words is "two hundred twenty-one billion, one hundred twenty million, two hundred thousand, twenty-one".