122212639 has 8 divisors (see below), whose sum is σ = 127761120. Its totient is φ = 116683776.

The previous prime is 122212637. The next prime is 122212667. The reversal of 122212639 is 936212221.

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

It is a cyclic number.

It is not a de Polignac number, because 122212639 - 2¹ = 122212637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122212637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8667 + ... + 17875.

It is an arithmetic number, because the mean of its divisors is an integer number (15970140).

Almost surely, 2^122212639 is an apocalyptic number.

122212639 is a deficient number, since it is larger than the sum of its proper divisors (5548481).

122212639 is an equidigital number, since it uses as much as digits as its factorization.

122212639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9809.

The product of its digits is 2592, while the sum is 28.

The square root of 122212639 is about 11054.9825418225. The cubic root of 122212639 is about 496.2555468082.

It can be divided in two parts, 1222 and 12639, that added together give a triangular number (13861 = T₁₆₆).

The spelling of 122212639 in words is "one hundred twenty-two million, two hundred twelve thousand, six hundred thirty-nine".