1103111520155 has 8 divisors (see below), whose sum is σ = 1323755721792. Its totient is φ = 882474617728.

The previous prime is 1103111520131. The next prime is 1103111520191. The reversal of 1103111520155 is 5510251113011.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1103111520155 - 2¹⁴ = 1103111503771 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1486622 + ... + 2101491.

It is an arithmetic number, because the mean of its divisors is an integer number (165469465224).

Almost surely, 2^{1103111520155} is an apocalyptic number.

1103111520155 is a deficient number, since it is larger than the sum of its proper divisors (220644201637).

1103111520155 is an equidigital number, since it uses as much as digits as its factorization.

1103111520155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3649605.

The product of its (nonzero) digits is 750, while the sum is 26.

Adding to 1103111520155 its reverse (5510251113011), we get a palindrome (6613362633166).

The spelling of 1103111520155 in words is "one trillion, one hundred three billion, one hundred eleven million, five hundred twenty thousand, one hundred fifty-five".