21230101332 has 72 divisors (see below), whose sum is σ = 61089013440. Its totient is φ = 6153649920.

The previous prime is 21230101331. The next prime is 21230101357. The reversal of 21230101332 is 23310103212.

21230101332 is a `hidden beast` number, since 2 + 1 + 230 + 101 + 332 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21230101331) 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 23 ways as a sum of consecutive naturals, for example, 1156357 + ... + 1174572.

It is an arithmetic number, because the mean of its divisors is an integer number (848458520).

Almost surely, 2^21230101332 is an apocalyptic number.

21230101332 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21230101332 is an abundant number, since it is smaller than the sum of its proper divisors (39858912108).

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

21230101332 is a wasteful number, since it uses less digits than its factorization.

21230101332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2330973 (or 2330968 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 21230101332 its reverse (23310103212), we get a palindrome (44540204544).

The spelling of 21230101332 in words is "twenty-one billion, two hundred thirty million, one hundred one thousand, three hundred thirty-two".