212334012 has 72 divisors (see below), whose sum is σ = 619989552. Its totient is φ = 60556800.

The previous prime is 212334011. The next prime is 212334013. The reversal of 212334012 is 210433212.

It is an interprime number because it is at equal distance from previous prime (212334011) and next prime (212334013).

It is a super-2 number, since 2×212334012² = 90171465304032288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212334011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9039 + ... + 22502.

It is an arithmetic number, because the mean of its divisors is an integer number (8610966).

Almost surely, 2^212334012 is an apocalyptic number.

212334012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

212334012 is an abundant number, since it is smaller than the sum of its proper divisors (407655540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212334012 is a wasteful number, since it uses less digits than its factorization.

212334012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31579 (or 31574 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 212334012 is about 14571.6852834530. The cubic root of 212334012 is about 596.5861798920.

Adding to 212334012 its reverse (210433212), we get a palindrome (422767224).

The spelling of 212334012 in words is "two hundred twelve million, three hundred thirty-four thousand, twelve".