122721064 has 16 divisors (see below), whose sum is σ = 237525120. Its totient is φ = 59381040.

The previous prime is 122721017. The next prime is 122721073. The reversal of 122721064 is 460127221.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 247174 + ... + 247669.

It is an arithmetic number, because the mean of its divisors is an integer number (14845320).

Almost surely, 2^122721064 is an apocalyptic number.

It is an amenable number.

122721064 is a deficient number, since it is larger than the sum of its proper divisors (114804056).

122721064 is a wasteful number, since it uses less digits than its factorization.

122721064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494880 (or 494876 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 122721064 is about 11077.9539627135. The cubic root of 122721064 is about 496.9427633752.

Adding to 122721064 its reverse (460127221), we get a palindrome (582848285).

The spelling of 122721064 in words is "one hundred twenty-two million, seven hundred twenty-one thousand, sixty-four".