12220026655546 has 16 divisors (see below), whose sum is σ = 18481404205440. Its totient is φ = 6059643458400.

The previous prime is 12220026655519. The next prime is 12220026655547. The reversal of 12220026655546 is 64555662002221.

It is a junction number, because it is equal to n+sod(n) for n = 12220026655496 and 12220026655505.

It is not an unprimeable number, because it can be changed into a prime (12220026655547) 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, 20929266 + ... + 21505213.

It is an arithmetic number, because the mean of its divisors is an integer number (1155087762840).

Almost surely, 2^{12220026655546} is an apocalyptic number.

12220026655546 is a deficient number, since it is larger than the sum of its proper divisors (6261377549894).

12220026655546 is a wasteful number, since it uses less digits than its factorization.

12220026655546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42435669.

The product of its (nonzero) digits is 1728000, while the sum is 46.

Adding to 12220026655546 its reverse (64555662002221), we get a palindrome (76775688657767).

The spelling of 12220026655546 in words is "twelve trillion, two hundred twenty billion, twenty-six million, six hundred fifty-five thousand, five hundred forty-six".