212334420434 has 4 divisors (see below), whose sum is σ = 318501630654. Its totient is φ = 106167210216.

The previous prime is 212334420427. The next prime is 212334420437. The reversal of 212334420434 is 434024433212.

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., 212149596409 + 184824025 = 460597^2 + 13595^2 .

It is a super-2 number, since 2×212334420434² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212334420434.

It is not an unprimeable number, because it can be changed into a prime (212334420437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53083605107 + ... + 53083605110.

Almost surely, 2^212334420434 is an apocalyptic number.

212334420434 is a deficient number, since it is larger than the sum of its proper divisors (106167210220).

212334420434 is a wasteful number, since it uses less digits than its factorization.

212334420434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106167210219.

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 212334420434 its reverse (434024433212), we get a palindrome (646358853646).

The spelling of 212334420434 in words is "two hundred twelve billion, three hundred thirty-four million, four hundred twenty thousand, four hundred thirty-four".