122015810 has 32 divisors (see below), whose sum is σ = 254040192. Its totient is φ = 41328000.

The previous prime is 122015797. The next prime is 122015813. The reversal of 122015810 is 18510221.

It is a happy number.

It is a super-2 number, since 2×122015810² = 29775715779912200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (122015813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4691 + ... + 16310.

It is an arithmetic number, because the mean of its divisors is an integer number (7938756).

Almost surely, 2^122015810 is an apocalyptic number.

122015810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122015810 is an abundant number, since it is smaller than the sum of its proper divisors (132024382).

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

122015810 is a wasteful number, since it uses less digits than its factorization.

122015810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21098.

The product of its (nonzero) digits is 160, while the sum is 20.

The square root of 122015810 is about 11046.0766790748. The cubic root of 122015810 is about 495.9889896316.

The spelling of 122015810 in words is "one hundred twenty-two million, fifteen thousand, eight hundred ten".