212149101 has 8 divisors (see below), whose sum is σ = 282961600. Its totient is φ = 141384672.

The previous prime is 212149061. The next prime is 212149153. The reversal of 212149101 is 101941212.

It is a happy number.

212149101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

212149101 is a nontrivial binomial coefficient, being equal to C(20599, 2).

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

It is not a de Polignac number, because 212149101 - 2¹⁰ = 212148077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212141101) 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, 1 + ... + 20598.

It is an arithmetic number, because the mean of its divisors is an integer number (35370200).

Almost surely, 2^212149101 is an apocalyptic number.

212149101 is the 20598-th triangular number.

It is an amenable number.

212149101 is a deficient number, since it is larger than the sum of its proper divisors (70812499).

212149101 is a wasteful number, since it uses less digits than its factorization.

212149101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24035.

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 212149101 is about 14565.3390279801. The cubic root of 212149101 is about 596.4129506414.

The spelling of 212149101 in words is "two hundred twelve million, one hundred forty-nine thousand, one hundred one".