122621536 has 12 divisors (see below), whose sum is σ = 241411212. Its totient is φ = 61310752.

The previous prime is 122621519. The next prime is 122621539. The reversal of 122621536 is 635126221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122621539) by changing a digit.

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 as a sum of consecutive naturals, namely, 1915930 + ... + 1915993.

It is an arithmetic number, because the mean of its divisors is an integer number (20117601).

Almost surely, 2^122621536 is an apocalyptic number.

122621536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

122621536 is a deficient number, since it is larger than the sum of its proper divisors (118789676).

122621536 is an equidigital number, since it uses as much as digits as its factorization.

122621536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3831933 (or 3831925 counting only the distinct ones).

The product of its digits is 4320, while the sum is 28.

The square root of 122621536 is about 11073.4608862812. The cubic root of 122621536 is about 496.8083852048.

Adding to 122621536 its reverse (635126221), we get a palindrome (757747757).

The spelling of 122621536 in words is "one hundred twenty-two million, six hundred twenty-one thousand, five hundred thirty-six".