122355690 has 16 divisors (see below), whose sum is σ = 293653728. Its totient is φ = 32628176.

The previous prime is 122355689. The next prime is 122355697. The reversal of 122355690 is 96553221.

It is a super-2 number, since 2×122355690² = 29941829750752200, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (122355697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2039232 + ... + 2039291.

It is an arithmetic number, because the mean of its divisors is an integer number (18353358).

Almost surely, 2^122355690 is an apocalyptic number.

122355690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122355690 is an abundant number, since it is smaller than the sum of its proper divisors (171298038).

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

122355690 is a wasteful number, since it uses less digits than its factorization.

122355690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4078533.

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 122355690 is about 11061.4506281952. The cubic root of 122355690 is about 496.4490951807.

The spelling of 122355690 in words is "one hundred twenty-two million, three hundred fifty-five thousand, six hundred ninety".