122226390 has 96 divisors (see below), whose sum is σ = 373385376. Its totient is φ = 27348480.

The previous prime is 122226389. The next prime is 122226437. The reversal of 122226390 is 93622221.

122226390 is a `hidden beast` number, since 1 + 2 + 2 + 22 + 639 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8122 + ... + 17618.

It is an arithmetic number, because the mean of its divisors is an integer number (3889431).

Almost surely, 2^122226390 is an apocalyptic number.

122226390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 122226390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186692688).

122226390 is an abundant number, since it is smaller than the sum of its proper divisors (251158986).

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

122226390 is a wasteful number, since it uses less digits than its factorization.

122226390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9534 (or 9531 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 122226390 is about 11055.6044610867. The cubic root of 122226390 is about 496.2741585060.

The spelling of 122226390 in words is "one hundred twenty-two million, two hundred twenty-six thousand, three hundred ninety".