20121023032 has 64 divisors (see below), whose sum is σ = 41994948960. Its totient is φ = 8960140800.

The previous prime is 20121022993. The next prime is 20121023077. The reversal of 20121023032 is 23032012102.

It is a junction number, because it is equal to n+sod(n) for n = 20121022997 and 20121023015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3602482 + ... + 3608062.

Almost surely, 2^20121023032 is an apocalyptic number.

20121023032 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20121023032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20997474480).

20121023032 is an abundant number, since it is smaller than the sum of its proper divisors (21873925928).

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

20121023032 is a wasteful number, since it uses less digits than its factorization.

20121023032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6424 (or 6420 counting only the distinct ones).

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

Adding to 20121023032 its reverse (23032012102), we get a palindrome (43153035134).

The spelling of 20121023032 in words is "twenty billion, one hundred twenty-one million, twenty-three thousand, thirty-two".