221414106615421 has 4 divisors (see below), whose sum is σ = 231040806903072. Its totient is φ = 211787406327772.

The previous prime is 221414106615397. The next prime is 221414106615587. The reversal of 221414106615421 is 124516601414122.

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 a cyclic number.

It is not a de Polignac number, because 221414106615421 - 2⁷ = 221414106615293 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 (221414106625421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4813350143791 + ... + 4813350143836.

It is an arithmetic number, because the mean of its divisors is an integer number (57760201725768).

Almost surely, 2^{221414106615421} is an apocalyptic number.

It is an amenable number.

221414106615421 is a deficient number, since it is larger than the sum of its proper divisors (9626700287651).

221414106615421 is an equidigital number, since it uses as much as digits as its factorization.

221414106615421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9626700287650.

The product of its (nonzero) digits is 92160, while the sum is 40.

The spelling of 221414106615421 in words is "two hundred twenty-one trillion, four hundred fourteen billion, one hundred six million, six hundred fifteen thousand, four hundred twenty-one".