212000100121021 has 8 divisors (see below), whose sum is σ = 214017753507264. Its totient is φ = 209984930003520.

The previous prime is 212000100121003. The next prime is 212000100121057. The reversal of 212000100121021 is 120121001000212.

212000100121021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 212000100121021 - 2⁵ = 212000100120989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212000100120992 and 212000100121010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212000100121721) 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, 620645631 + ... + 620987116.

It is an arithmetic number, because the mean of its divisors is an integer number (26752219188408).

Almost surely, 2^{212000100121021} is an apocalyptic number.

It is an amenable number.

212000100121021 is a deficient number, since it is larger than the sum of its proper divisors (2017653386243).

212000100121021 is a wasteful number, since it uses less digits than its factorization.

212000100121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1241634371.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 212000100121021 its reverse (120121001000212), we get a palindrome (332121101121233).

The spelling of 212000100121021 in words is "two hundred twelve trillion, one hundred million, one hundred twenty-one thousand, twenty-one".