212475819 has 4 divisors (see below), whose sum is σ = 283301096. Its totient is φ = 141650544.

The previous prime is 212475811. The next prime is 212475839. The reversal of 212475819 is 918574212.

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

It is not a de Polignac number, because 212475819 - 2³ = 212475811 is a prime.

It is a super-2 number, since 2×212475819² = 90291947319441522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212475811) 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, 35412634 + ... + 35412639.

It is an arithmetic number, because the mean of its divisors is an integer number (70825274).

Almost surely, 2^212475819 is an apocalyptic number.

212475819 is a deficient number, since it is larger than the sum of its proper divisors (70825277).

212475819 is an equidigital number, since it uses as much as digits as its factorization.

212475819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70825276.

The product of its digits is 40320, while the sum is 39.

The square root of 212475819 is about 14576.5503120594. The cubic root of 212475819 is about 596.7189601113.

The spelling of 212475819 in words is "two hundred twelve million, four hundred seventy-five thousand, eight hundred nineteen".