120103551511 has 4 divisors (see below), whose sum is σ = 122658946272. Its totient is φ = 117548156752.

The previous prime is 120103551493. The next prime is 120103551517. The reversal of 120103551511 is 115155301021.

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

It is a cyclic number.

It is not a de Polignac number, because 120103551511 - 2⁵ = 120103551479 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 (120103551517) 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, 1277697310 + ... + 1277697403.

It is an arithmetic number, because the mean of its divisors is an integer number (30664736568).

Almost surely, 2^120103551511 is an apocalyptic number.

120103551511 is a deficient number, since it is larger than the sum of its proper divisors (2555394761).

120103551511 is an equidigital number, since it uses as much as digits as its factorization.

120103551511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2555394760.

The product of its (nonzero) digits is 750, while the sum is 25.

Adding to 120103551511 its reverse (115155301021), we get a palindrome (235258852532).

The spelling of 120103551511 in words is "one hundred twenty billion, one hundred three million, five hundred fifty-one thousand, five hundred eleven".