23132121020 has 48 divisors (see below), whose sum is σ = 50050253568. Its totient is φ = 8973918720.

The previous prime is 23132120953. The next prime is 23132121073. The reversal of 23132121020 is 2012123132.

It is a self number, because there is not a number n which added to its sum of digits gives 23132121020.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 181685 + ... + 281555.

It is an arithmetic number, because the mean of its divisors is an integer number (1042713616).

Almost surely, 2^23132121020 is an apocalyptic number.

23132121020 is a gapful number since it is divisible by the number (20) 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 23132121020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25025126784).

23132121020 is an abundant number, since it is smaller than the sum of its proper divisors (26918132548).

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

23132121020 is a wasteful number, since it uses less digits than its factorization.

23132121020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100230 (or 100228 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 23132121020 its reverse (2012123132), we get a palindrome (25144244152).

The spelling of 23132121020 in words is "twenty-three billion, one hundred thirty-two million, one hundred twenty-one thousand, twenty".