691223232122 has 16 divisors (see below), whose sum is σ = 1043912724480. Its totient is φ = 343254323568.

The previous prime is 691223232121. The next prime is 691223232131. The reversal of 691223232122 is 221232322196.

It is not an unprimeable number, because it can be changed into a prime (691223232121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194279 + ... + 1191717.

It is an arithmetic number, because the mean of its divisors is an integer number (65244545280).

Almost surely, 2^691223232122 is an apocalyptic number.

691223232122 is a deficient number, since it is larger than the sum of its proper divisors (352689492358).

691223232122 is a wasteful number, since it uses less digits than its factorization.

691223232122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 999805.

The product of its digits is 31104, while the sum is 35.

The spelling of 691223232122 in words is "six hundred ninety-one billion, two hundred twenty-three million, two hundred thirty-two thousand, one hundred twenty-two".