221100153 has 24 divisors (see below), whose sum is σ = 310578624. Its totient is φ = 139857120.

The previous prime is 221100133. The next prime is 221100157. The reversal of 221100153 is 351001122.

It is not a de Polignac number, because 221100153 - 2¹⁶ = 221034617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221100157) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 152076 + ... + 153522.

It is an arithmetic number, because the mean of its divisors is an integer number (12940776).

Almost surely, 2^221100153 is an apocalyptic number.

It is an amenable number.

221100153 is a deficient number, since it is larger than the sum of its proper divisors (89478471).

221100153 is a wasteful number, since it uses less digits than its factorization.

221100153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1565 (or 1534 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 221100153 is about 14869.4368756856. The cubic root of 221100153 is about 604.6856760329.

Adding to 221100153 its reverse (351001122), we get a palindrome (572101275).

The spelling of 221100153 in words is "two hundred twenty-one million, one hundred thousand, one hundred fifty-three".