212645422 has 8 divisors (see below), whose sum is σ = 347965272. Its totient is φ = 96657000.

The previous prime is 212645413. The next prime is 212645431. The reversal of 212645422 is 224546212.

It is an interprime number because it is at equal distance from previous prime (212645413) and next prime (212645431).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4832829 + ... + 4832872.

It is an arithmetic number, because the mean of its divisors is an integer number (43495659).

Almost surely, 2^212645422 is an apocalyptic number.

212645422 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

212645422 is a deficient number, since it is larger than the sum of its proper divisors (135319850).

212645422 is a wasteful number, since it uses less digits than its factorization.

212645422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9665714.

The product of its digits is 7680, while the sum is 28.

The square root of 212645422 is about 14582.3668174957. The cubic root of 212645422 is about 596.8776894043.

The spelling of 212645422 in words is "two hundred twelve million, six hundred forty-five thousand, four hundred twenty-two".