123021011010 has 64 divisors (see below), whose sum is σ = 304992092160. Its totient is φ = 31724706240.

The previous prime is 123021010943. The next prime is 123021011023. The reversal of 123021011010 is 10110120321.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1276911 + ... + 1369869.

It is an arithmetic number, because the mean of its divisors is an integer number (4765501440).

Almost surely, 2^123021011010 is an apocalyptic number.

123021011010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 123021011010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152496046080).

123021011010 is an abundant number, since it is smaller than the sum of its proper divisors (181971081150).

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

123021011010 is a wasteful number, since it uses less digits than its factorization.

123021011010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94423.

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

Adding to 123021011010 its reverse (10110120321), we get a palindrome (133131131331).

The spelling of 123021011010 in words is "one hundred twenty-three billion, twenty-one million, eleven thousand, ten".