212083621 has 4 divisors (see below), whose sum is σ = 221304672. Its totient is φ = 202862572.

The previous prime is 212083591. The next prime is 212083631. The reversal of 212083621 is 126380212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212083621 - 2¹³ = 212075429 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 (212083631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4610491 + ... + 4610536.

It is an arithmetic number, because the mean of its divisors is an integer number (55326168).

Almost surely, 2^212083621 is an apocalyptic number.

It is an amenable number.

212083621 is a deficient number, since it is larger than the sum of its proper divisors (9221051).

212083621 is an equidigital number, since it uses as much as digits as its factorization.

212083621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9221050.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 212083621 is about 14563.0910523831. The cubic root of 212083621 is about 596.3515832062.

The spelling of 212083621 in words is "two hundred twelve million, eighty-three thousand, six hundred twenty-one".