11010121123 has 8 divisors (see below), whose sum is σ = 11105807328. Its totient is φ = 10914789504.

The previous prime is 11010121103. The next prime is 11010121127. The reversal of 11010121123 is 32112101011.

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 a de Polignac number, because none of the positive numbers 2^k-11010121123 is a prime.

It is a super-3 number, since 3×11010121123³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11010121127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26086 + ... + 150667.

It is an arithmetic number, because the mean of its divisors is an integer number (1388225916).

Almost surely, 2^11010121123 is an apocalyptic number.

11010121123 is a deficient number, since it is larger than the sum of its proper divisors (95686205).

11010121123 is a wasteful number, since it uses less digits than its factorization.

11010121123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177293.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 11010121123 its reverse (32112101011), we get a palindrome (43122222134).

The spelling of 11010121123 in words is "eleven billion, ten million, one hundred twenty-one thousand, one hundred twenty-three".