123216770 has 16 divisors (see below), whose sum is σ = 221935680. Its totient is φ = 49254384.

The previous prime is 123216749. The next prime is 123216781. The reversal of 123216770 is 77612321.

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 7 ways as a sum of consecutive naturals, for example, 17369 + ... + 23411.

It is an arithmetic number, because the mean of its divisors is an integer number (13870980).

Almost surely, 2^123216770 is an apocalyptic number.

123216770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123216770 is a deficient number, since it is larger than the sum of its proper divisors (98718910).

123216770 is a wasteful number, since it uses less digits than its factorization.

123216770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8089.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 123216770 is about 11100.3049507660. The cubic root of 123216770 is about 497.6109631868.

It can be divided in two parts, 12321 and 6770, that added together give a palindrome (19091).

The spelling of 123216770 in words is "one hundred twenty-three million, two hundred sixteen thousand, seven hundred seventy".