122161104550 has 48 divisors (see below), whose sum is σ = 228667801824. Its totient is φ = 48553920000.

The previous prime is 122161104529. The next prime is 122161104677. The reversal of 122161104550 is 55401161221.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 5544055 + ... + 5566045.

It is an arithmetic number, because the mean of its divisors is an integer number (4763912538).

Almost surely, 2^122161104550 is an apocalyptic number.

122161104550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122161104550 is a deficient number, since it is larger than the sum of its proper divisors (106506697274).

122161104550 is a wasteful number, since it uses less digits than its factorization.

122161104550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22705 (or 22700 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 28.

Adding to 122161104550 its reverse (55401161221), we get a palindrome (177562265771).

The spelling of 122161104550 in words is "one hundred twenty-two billion, one hundred sixty-one million, one hundred four thousand, five hundred fifty".