221341113021 has 8 divisors (see below), whose sum is σ = 337281696064. Its totient is φ = 126480636000.

The previous prime is 221341112989. The next prime is 221341113029. The reversal of 221341113021 is 120311143122.

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

It is not a de Polignac number, because 221341113021 - 2⁵ = 221341112989 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 10540053001 = 221341113021 / (2 + 2 + 1 + 3 + 4 + 1 + 1 + 1 + 3 + 0 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221341113029) 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, 5270026480 + ... + 5270026521.

It is an arithmetic number, because the mean of its divisors is an integer number (42160212008).

Almost surely, 2^221341113021 is an apocalyptic number.

221341113021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

221341113021 is a deficient number, since it is larger than the sum of its proper divisors (115940583043).

221341113021 is a wasteful number, since it uses less digits than its factorization.

221341113021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10540053011.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 221341113021 its reverse (120311143122), we get a palindrome (341652256143).

The spelling of 221341113021 in words is "two hundred twenty-one billion, three hundred forty-one million, one hundred thirteen thousand, twenty-one".