11155122451 has 8 divisors (see below), whose sum is σ = 12170188800. Its totient is φ = 10140216840.

The previous prime is 11155122449. The next prime is 11155122463. The reversal of 11155122451 is 15422155111.

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 11155122451 - 2¹ = 11155122449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11155125451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140130 + ... + 204808.

It is an arithmetic number, because the mean of its divisors is an integer number (1521273600).

Almost surely, 2^11155122451 is an apocalyptic number.

11155122451 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11155122451 is a deficient number, since it is larger than the sum of its proper divisors (1015066349).

11155122451 is a wasteful number, since it uses less digits than its factorization.

11155122451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80369.

The product of its digits is 2000, while the sum is 28.

Adding to 11155122451 its reverse (15422155111), we get a palindrome (26577277562).

The spelling of 11155122451 in words is "eleven billion, one hundred fifty-five million, one hundred twenty-two thousand, four hundred fifty-one".