221626141 has 16 divisors (see below), whose sum is σ = 245073600. Its totient is φ = 200405040.

The previous prime is 221626129. The next prime is 221626147. The reversal of 221626141 is 141626122.

It is a happy number.

It is not a de Polignac number, because 221626141 - 2¹¹ = 221624093 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 (221626147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 357730 + ... + 358348.

It is an arithmetic number, because the mean of its divisors is an integer number (15317100).

Almost surely, 2^221626141 is an apocalyptic number.

It is an amenable number.

221626141 is a deficient number, since it is larger than the sum of its proper divisors (23447459).

221626141 is an equidigital number, since it uses as much as digits as its factorization.

221626141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921 (or 899 counting only the distinct ones).

The product of its digits is 1152, while the sum is 25.

The square root of 221626141 is about 14887.1132527431. The cubic root of 221626141 is about 605.1648035878.

The spelling of 221626141 in words is "two hundred twenty-one million, six hundred twenty-six thousand, one hundred forty-one".