100212320021 has 8 divisors (see below), whose sum is σ = 109758081888. Its totient is φ = 90739150000.

The previous prime is 100212320009. The next prime is 100212320051. The reversal of 100212320021 is 120023212001.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100212320021 - 2⁶ = 100212319957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 100212319978 and 100212320005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100212320051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18145070 + ... + 18150591.

It is an arithmetic number, because the mean of its divisors is an integer number (13719760236).

Almost surely, 2^100212320021 is an apocalyptic number.

100212320021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

100212320021 is a deficient number, since it is larger than the sum of its proper divisors (9545761867).

100212320021 is a wasteful number, since it uses less digits than its factorization.

100212320021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36295923.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 100212320021 its reverse (120023212001), we get a palindrome (220235532022).

The spelling of 100212320021 in words is "one hundred billion, two hundred twelve million, three hundred twenty thousand, twenty-one".