1100111320551 has 16 divisors (see below), whose sum is σ = 1468215956480. Its totient is φ = 732707458560.

The previous prime is 1100111320439. The next prime is 1100111320559. The reversal of 1100111320551 is 1550231110011.

It is not a de Polignac number, because 1100111320551 - 2¹⁵ = 1100111287783 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 (1100111320559) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13467690 + ... + 13549128.

It is an arithmetic number, because the mean of its divisors is an integer number (91763497280).

Almost surely, 2^{1100111320551} is an apocalyptic number.

1100111320551 is a deficient number, since it is larger than the sum of its proper divisors (368104635929).

1100111320551 is a wasteful number, since it uses less digits than its factorization.

1100111320551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85686.

The product of its (nonzero) digits is 150, while the sum is 21.

Adding to 1100111320551 its reverse (1550231110011), we get a palindrome (2650342430562).

The spelling of 1100111320551 in words is "one trillion, one hundred billion, one hundred eleven million, three hundred twenty thousand, five hundred fifty-one".