212019946 has 4 divisors (see below), whose sum is σ = 318029922. Its totient is φ = 106009972.

The previous prime is 212019889. The next prime is 212019947. The reversal of 212019946 is 649910212.

212019946 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 137007025 + 75012921 = 11705^2 + 8661^2 .

It is not an unprimeable number, because it can be changed into a prime (212019947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53004985 + ... + 53004988.

Almost surely, 2^212019946 is an apocalyptic number.

212019946 is a deficient number, since it is larger than the sum of its proper divisors (106009976).

212019946 is a wasteful number, since it uses less digits than its factorization.

212019946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106009975.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 212019946 is about 14560.9047109031. The cubic root of 212019946 is about 596.2918952904.

The spelling of 212019946 in words is "two hundred twelve million, nineteen thousand, nine hundred forty-six".