21623061323100 has 72 divisors (see below), whose sum is σ = 62567370432000. Its totient is φ = 5765721452480.

The previous prime is 21623061323099. The next prime is 21623061323137. The reversal of 21623061323100 is 132316032612.

It is a super-2 number, since 2×21623061323100² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1379989 + ... + 6719411.

It is an arithmetic number, because the mean of its divisors is an integer number (868991256000).

Almost surely, 2^{21623061323100} is an apocalyptic number.

21623061323100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21623061323100 is an abundant number, since it is smaller than the sum of its proper divisors (40944309108900).

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

21623061323100 is a wasteful number, since it uses less digits than its factorization.

21623061323100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5352939 (or 5352932 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

Adding to 21623061323100 its reverse (132316032612), we get a palindrome (21755377355712).

The spelling of 21623061323100 in words is "twenty-one trillion, six hundred twenty-three billion, sixty-one million, three hundred twenty-three thousand, one hundred".