20010123232 has 48 divisors (see below), whose sum is σ = 43401872304. Its totient is φ = 9005440000.

The previous prime is 20010123187. The next prime is 20010123233. The reversal of 20010123232 is 23232101002.

It is a super-2 number, since 2×20010123232² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010123233) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 245869 + ... + 316972.

It is an arithmetic number, because the mean of its divisors is an integer number (904205673).

Almost surely, 2^20010123232 is an apocalyptic number.

20010123232 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20010123232 is an abundant number, since it is smaller than the sum of its proper divisors (23391749072).

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

20010123232 is a wasteful number, since it uses less digits than its factorization.

20010123232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562963 (or 562955 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20010123232 its reverse (23232101002), we get a palindrome (43242224234).

The spelling of 20010123232 in words is "twenty billion, ten million, one hundred twenty-three thousand, two hundred thirty-two".