221048377 has 8 divisors (see below), whose sum is σ = 251628480. Its totient is φ = 192215760.

The previous prime is 221048357. The next prime is 221048389. The reversal of 221048377 is 773840122.

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

It is not a de Polignac number, because 221048377 - 2¹⁵ = 221015609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221048327) 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, 436602 + ... + 437107.

It is an arithmetic number, because the mean of its divisors is an integer number (31453560).

Almost surely, 2^221048377 is an apocalyptic number.

It is an amenable number.

221048377 is a deficient number, since it is larger than the sum of its proper divisors (30580103).

221048377 is a wasteful number, since it uses less digits than its factorization.

221048377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873743.

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 221048377 is about 14867.6957528731. The cubic root of 221048377 is about 604.6384717090.

Adding to 221048377 its reverse (773840122), we get a palindrome (994888499).

The spelling of 221048377 in words is "two hundred twenty-one million, forty-eight thousand, three hundred seventy-seven".