694240221122 has 54 divisors (see below), whose sum is σ = 1287087480441. Its totient is φ = 279973108800.

The previous prime is 694240221121. The next prime is 694240221137. The reversal of 694240221122 is 221122042496.

It can be written as a sum of positive squares in 2 ways, for example, as 635385946321 + 58854274801 = 797111^2 + 242599^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=589169.

It is not an unprimeable number, because it can be changed into a prime (694240221121) by changing a digit.

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 26 ways as a sum of consecutive naturals, for example, 140219747 + ... + 140224697.

Almost surely, 2^694240221122 is an apocalyptic number.

694240221122 is a deficient number, since it is larger than the sum of its proper divisors (592847259319).

694240221122 is an frugal number, since it uses more digits than its factorization.

694240221122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9952 (or 4977 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The spelling of 694240221122 in words is "six hundred ninety-four billion, two hundred forty million, two hundred twenty-one thousand, one hundred twenty-two".