10121563 has 4 divisors (see below), whose sum is σ = 10194520. Its totient is φ = 10048608.

The previous prime is 10121561. The next prime is 10121603. The reversal of 10121563 is 36512101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36512101 = 271 ⋅134731.

It is a cyclic number.

It is not a de Polignac number, because 10121563 - 2¹ = 10121561 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10121563.

It is not an unprimeable number, because it can be changed into a prime (10121561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36270 + ... + 36547.

It is an arithmetic number, because the mean of its divisors is an integer number (2548630).

Almost surely, 2^10121563 is an apocalyptic number.

10121563 is a deficient number, since it is larger than the sum of its proper divisors (72957).

10121563 is an equidigital number, since it uses as much as digits as its factorization.

It is an anagram of its base 9 representation: 10121563 = (21036151)₉.

10121563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72956.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 10121563 is about 3181.4403970529. The cubic root of 10121563 is about 216.3129537052.

Adding to 10121563 its reverse (36512101), we get a palindrome (46633664).

The spelling of 10121563 in words is "ten million, one hundred twenty-one thousand, five hundred sixty-three".