221413629 has 4 divisors (see below), whose sum is σ = 295218176. Its totient is φ = 147609084.

The previous prime is 221413613. The next prime is 221413639. The reversal of 221413629 is 926314122.

221413629 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 221413629 - 2⁴ = 221413613 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221413596 and 221413605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221413639) 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, 36902269 + ... + 36902274.

It is an arithmetic number, because the mean of its divisors is an integer number (73804544).

Almost surely, 2^221413629 is an apocalyptic number.

It is an amenable number.

221413629 is a deficient number, since it is larger than the sum of its proper divisors (73804547).

221413629 is an equidigital number, since it uses as much as digits as its factorization.

221413629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73804546.

The product of its digits is 5184, while the sum is 30.

The square root of 221413629 is about 14879.9740927194. The cubic root of 221413629 is about 604.9713157177.

The spelling of 221413629 in words is "two hundred twenty-one million, four hundred thirteen thousand, six hundred twenty-nine".