100120321230021 has 24 divisors (see below), whose sum is σ = 147070077804000. Its totient is φ = 65615274644832.

The previous prime is 100120321229989. The next prime is 100120321230077. The reversal of 100120321230021 is 120032123021001.

100120321230021 is a `hidden beast` number, since 1 + 0 + 0 + 1 + 20 + 321 + 2 + 300 + 21 = 666.

It is not a de Polignac number, because 100120321230021 - 2⁵ = 100120321229989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100120321229976 and 100120321230003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100120321240021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 213301375 + ... + 213770243.

It is an arithmetic number, because the mean of its divisors is an integer number (6127919908500).

Almost surely, 2^{100120321230021} is an apocalyptic number.

It is an amenable number.

100120321230021 is a deficient number, since it is larger than the sum of its proper divisors (46949756573979).

100120321230021 is a wasteful number, since it uses less digits than its factorization.

100120321230021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871073 (or 871070 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 100120321230021 its reverse (120032123021001), we get a palindrome (220152444251022).

The spelling of 100120321230021 in words is "one hundred trillion, one hundred twenty billion, three hundred twenty-one million, two hundred thirty thousand, twenty-one".