122289810 has 96 divisors (see below), whose sum is σ = 314563392. Its totient is φ = 30401280.

The previous prime is 122289809. The next prime is 122289841. The reversal of 122289810 is 18982221.

It is a super-2 number, since 2×122289810² = 29909595259672200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 933445 + ... + 933575.

It is an arithmetic number, because the mean of its divisors is an integer number (3276702).

Almost surely, 2^122289810 is an apocalyptic number.

122289810 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 122289810, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157281696).

122289810 is an abundant number, since it is smaller than the sum of its proper divisors (192273582).

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

122289810 is a wasteful number, since it uses less digits than its factorization.

122289810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236 (or 207 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 33.

The square root of 122289810 is about 11058.4723176395. The cubic root of 122289810 is about 496.3599781207.

It can be divided in two parts, 12 and 2289810, that added together give a palindrome (2289822).

The spelling of 122289810 in words is "one hundred twenty-two million, two hundred eighty-nine thousand, eight hundred ten".