101128663 has 4 divisors (see below), whose sum is σ = 101150208. Its totient is φ = 101107120.

The previous prime is 101128649. The next prime is 101128681. The reversal of 101128663 is 366821101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 101128663 - 2¹⁷ = 100997591 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 (101128633) 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, 406 + ... + 14227.

It is an arithmetic number, because the mean of its divisors is an integer number (25287552).

Almost surely, 2^101128663 is an apocalyptic number.

101128663 is a deficient number, since it is larger than the sum of its proper divisors (21545).

101128663 is an equidigital number, since it uses as much as digits as its factorization.

101128663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21544.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 101128663 is about 10056.2748073031. The cubic root of 101128663 is about 465.8986176326.

Adding to 101128663 its reverse (366821101), we get a palindrome (467949764).

The spelling of 101128663 in words is "one hundred one million, one hundred twenty-eight thousand, six hundred sixty-three".