10551111001 has 4 divisors (see below), whose sum is σ = 10669662900. Its totient is φ = 10432559104.

The previous prime is 10551110959. The next prime is 10551111061. The reversal of 10551111001 is 10011115501.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2800949776 + 7750161225 = 52924^2 + 88035^2 .

It is a cyclic number.

It is not a de Polignac number, because 10551111001 - 2⁹ = 10551110489 is a prime.

It is a super-2 number, since 2×10551111001² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10551111061) 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, 59275816 + ... + 59275993.

It is an arithmetic number, because the mean of its divisors is an integer number (2667415725).

Almost surely, 2^10551111001 is an apocalyptic number.

It is an amenable number.

10551111001 is a deficient number, since it is larger than the sum of its proper divisors (118551899).

10551111001 is an equidigital number, since it uses as much as digits as its factorization.

10551111001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118551898.

The product of its (nonzero) digits is 25, while the sum is 16.

Adding to 10551111001 its reverse (10011115501), we get a palindrome (20562226502).

The spelling of 10551111001 in words is "ten billion, five hundred fifty-one million, one hundred eleven thousand, one".