221450330436461 has 8 divisors (see below), whose sum is σ = 259258923438144. Its totient is φ = 185184945312480.

The previous prime is 221450330436457. The next prime is 221450330436469. The reversal of 221450330436461 is 164634033054122.

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

It is a cyclic number.

It is not a de Polignac number, because 221450330436461 - 2² = 221450330436457 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221450330436469) 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, 385801969115 + ... + 385801969688.

It is an arithmetic number, because the mean of its divisors is an integer number (32407365429768).

Almost surely, 2^{221450330436461} is an apocalyptic number.

It is an amenable number.

221450330436461 is a deficient number, since it is larger than the sum of its proper divisors (37808593001683).

221450330436461 is an equidigital number, since it uses as much as digits as its factorization.

221450330436461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771603938851.

The product of its (nonzero) digits is 1244160, while the sum is 44.

The spelling of 221450330436461 in words is "two hundred twenty-one trillion, four hundred fifty billion, three hundred thirty million, four hundred thirty-six thousand, four hundred sixty-one".