11001020123 has 8 divisors (see below), whose sum is σ = 11080578000. Its totient is φ = 10921609728.

The previous prime is 11001020119. The next prime is 11001020131. The reversal of 11001020123 is 32102010011.

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 11001020123 - 2² = 11001020119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11001020323) 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, 115103 + ... + 187751.

It is an arithmetic number, because the mean of its divisors is an integer number (1385072250).

Almost surely, 2^11001020123 is an apocalyptic number.

11001020123 is a deficient number, since it is larger than the sum of its proper divisors (79557877).

11001020123 is an equidigital number, since it uses as much as digits as its factorization.

11001020123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73741.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 11001020123 its reverse (32102010011), we get a palindrome (43103030134).

The spelling of 11001020123 in words is "eleven billion, one million, twenty thousand, one hundred twenty-three".