212101202100121 has 8 divisors (see below), whose sum is σ = 212176500752160. Its totient is φ = 212025907748928.

The previous prime is 212101202100091. The next prime is 212101202100131. The reversal of 212101202100121 is 121001202101212.

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 212101202100121 - 2⁷ = 212101202099993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212101202100095 and 212101202100104.

It is not an unprimeable number, because it can be changed into a prime (212101202100131) 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, 99233130 + ... + 101347996.

It is an arithmetic number, because the mean of its divisors is an integer number (26522062594020).

Almost surely, 2^{212101202100121} is an apocalyptic number.

It is an amenable number.

212101202100121 is a deficient number, since it is larger than the sum of its proper divisors (75298652039).

212101202100121 is a wasteful number, since it uses less digits than its factorization.

212101202100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2150423.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 212101202100121 its reverse (121001202101212), we get a palindrome (333102404201333).

The spelling of 212101202100121 in words is "two hundred twelve trillion, one hundred one billion, two hundred two million, one hundred thousand, one hundred twenty-one".