221340014121 has 4 divisors (see below), whose sum is σ = 295120018832. Its totient is φ = 147560009412.

The previous prime is 221340014101. The next prime is 221340014143. The reversal of 221340014121 is 121410043122.

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 not a de Polignac number, because 221340014121 - 2¹⁷ = 221339883049 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (221340014101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36890002351 + ... + 36890002356.

It is an arithmetic number, because the mean of its divisors is an integer number (73780004708).

Almost surely, 2^221340014121 is an apocalyptic number.

It is an amenable number.

221340014121 is a deficient number, since it is larger than the sum of its proper divisors (73780004711).

221340014121 is an equidigital number, since it uses as much as digits as its factorization.

221340014121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73780004710.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 221340014121 its reverse (121410043122), we get a palindrome (342750057243).

The spelling of 221340014121 in words is "two hundred twenty-one billion, three hundred forty million, fourteen thousand, one hundred twenty-one".