1100100500551 has 32 divisors (see below), whose sum is σ = 1265380300800. Its totient is φ = 948631098240.

The previous prime is 1100100500539. The next prime is 1100100500561. The reversal of 1100100500551 is 1550050010011.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1100100500551 - 2²⁵ = 1100066946119 is a prime.

It is a super-2 number, since 2×1100100500551² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100100500561) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87728040 + ... + 87740578.

It is an arithmetic number, because the mean of its divisors is an integer number (39543134400).

Almost surely, 2^{1100100500551} is an apocalyptic number.

1100100500551 is a deficient number, since it is larger than the sum of its proper divisors (165279800249).

1100100500551 is a wasteful number, since it uses less digits than its factorization.

1100100500551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20119.

The product of its (nonzero) digits is 125, while the sum is 19.

Adding to 1100100500551 its reverse (1550050010011), we get a palindrome (2650150510562).

The spelling of 1100100500551 in words is "one trillion, one hundred billion, one hundred million, five hundred thousand, five hundred fifty-one".