100212210200021 has 8 divisors (see below), whose sum is σ = 102657034330200. Its totient is φ = 97767415778560.

The previous prime is 100212210199999. The next prime is 100212210200041. The reversal of 100212210200021 is 120002012212001.

It can be written as a sum of positive squares in 4 ways, for example, as 157302664996 + 100054907535025 = 396614^2 + 10002745^2 .

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 100212210200021 - 2³⁸ = 99937332293077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100212210199969 and 100212210200005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100212210200041) 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, 521186 + ... + 14166723.

It is an arithmetic number, because the mean of its divisors is an integer number (12832129291275).

Almost surely, 2^{100212210200021} is an apocalyptic number.

It is an amenable number.

100212210200021 is a deficient number, since it is larger than the sum of its proper divisors (2444824130179).

100212210200021 is a wasteful number, since it uses less digits than its factorization.

100212210200021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14854359.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 100212210200021 its reverse (120002012212001), we get a palindrome (220214222412022).

The spelling of 100212210200021 in words is "one hundred trillion, two hundred twelve billion, two hundred ten million, two hundred thousand, twenty-one".