1226022140660 has 48 divisors (see below), whose sum is σ = 2713680824400. Its totient is φ = 464564265984.

The previous prime is 1226022140561. The next prime is 1226022140731. The reversal of 1226022140660 is 660412206221.

It can be written as a sum of positive squares in 8 ways, for example, as 29102995216 + 1196919145444 = 170596^2 + 1094038^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19911065 + ... + 19972544.

It is an arithmetic number, because the mean of its divisors is an integer number (56535017175).

Almost surely, 2^{1226022140660} is an apocalyptic number.

1226022140660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1226022140660 is an abundant number, since it is smaller than the sum of its proper divisors (1487658683740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1226022140660 is a wasteful number, since it uses less digits than its factorization.

1226022140660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39883700 (or 39883698 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

Adding to 1226022140660 its reverse (660412206221), we get a palindrome (1886434346881).

The spelling of 1226022140660 in words is "one trillion, two hundred twenty-six billion, twenty-two million, one hundred forty thousand, six hundred sixty".