11123123298 has 128 divisors (see below), whose sum is σ = 28128122880. Its totient is φ = 2860945920.

The previous prime is 11123123287. The next prime is 11123123321. The reversal of 11123123298 is 89232132111.

It is a super-3 number, since 3×11123123298³ (a number of 31 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1265238 + ... + 1273998.

It is an arithmetic number, because the mean of its divisors is an integer number (219750960).

Almost surely, 2^11123123298 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11123123298, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14064061440).

11123123298 is an abundant number, since it is smaller than the sum of its proper divisors (17004999582).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11123123298 is a wasteful number, since it uses less digits than its factorization.

11123123298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8872.

The product of its digits is 5184, while the sum is 33.

It can be divided in two parts, 11123 and 123298, that added together give a triangular number (134421 = T₅₁₈).

The spelling of 11123123298 in words is "eleven billion, one hundred twenty-three million, one hundred twenty-three thousand, two hundred ninety-eight".