212012434 has 4 divisors (see below), whose sum is σ = 318018654. Its totient is φ = 106006216.

The previous prime is 212012401. The next prime is 212012467. The reversal of 212012434 is 434210212.

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

It is an interprime number because it is at equal distance from previous prime (212012401) and next prime (212012467).

It can be written as a sum of positive squares in only one way, i.e., 147258225 + 64754209 = 12135^2 + 8047^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53003107 + ... + 53003110.

Almost surely, 2^212012434 is an apocalyptic number.

212012434 is a deficient number, since it is larger than the sum of its proper divisors (106006220).

212012434 is a wasteful number, since it uses less digits than its factorization.

212012434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106006219.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 212012434 is about 14560.6467576135. The cubic root of 212012434 is about 596.2848528750.

Adding to 212012434 its reverse (434210212), we get a palindrome (646222646).

The spelling of 212012434 in words is "two hundred twelve million, twelve thousand, four hundred thirty-four".