212422014 has 80 divisors (see below), whose sum is σ = 572668800. Its totient is φ = 57491856.

The previous prime is 212421977. The next prime is 212422051. The reversal of 212422014 is 410224212.

It is an interprime number because it is at equal distance from previous prime (212421977) and next prime (212422051).

It is a super-2 number, since 2×212422014² = 90246224063632392, which contains 22 as substring.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 16617 + ... + 26475.

It is an arithmetic number, because the mean of its divisors is an integer number (7158360).

Almost surely, 2^212422014 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212422014, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (286334400).

212422014 is an abundant number, since it is smaller than the sum of its proper divisors (360246786).

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

212422014 is a wasteful number, since it uses less digits than its factorization.

212422014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9899 (or 9890 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 212422014 is about 14574.7045939189. The cubic root of 212422014 is about 596.6685870472.

Adding to 212422014 its reverse (410224212), we get a palindrome (622646226).

The spelling of 212422014 in words is "two hundred twelve million, four hundred twenty-two thousand, fourteen".