21003350627 has 16 divisors (see below), whose sum is σ = 24067549440. Its totient is φ = 17955144672.

The previous prime is 21003350579. The next prime is 21003350629. The reversal of 21003350627 is 72605330012.

It is a cyclic number.

It is not a de Polignac number, because 21003350627 - 2²⁰ = 21002302051 is a prime.

It is a super-2 number, since 2×21003350627² (a number of 21 digits) contains 22 as substring.

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 21003350627.

It is not an unprimeable number, because it can be changed into a prime (21003350629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7797893 + ... + 7800585.

It is an arithmetic number, because the mean of its divisors is an integer number (1504221840).

Almost surely, 2^21003350627 is an apocalyptic number.

21003350627 is a deficient number, since it is larger than the sum of its proper divisors (3064198813).

21003350627 is a wasteful number, since it uses less digits than its factorization.

21003350627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5242.

The product of its (nonzero) digits is 7560, while the sum is 29.

Adding to 21003350627 its reverse (72605330012), we get a palindrome (93608680639).

The spelling of 21003350627 in words is "twenty-one billion, three million, three hundred fifty thousand, six hundred twenty-seven".