12220631126 has 16 divisors (see below), whose sum is σ = 20012790528. Its totient is φ = 5550556200.

The previous prime is 12220631123. The next prime is 12220631131. The reversal of 12220631126 is 62113602221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12220631095 and 12220631104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220631123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184490 + ... + 241821.

It is an arithmetic number, because the mean of its divisors is an integer number (1250799408).

Almost surely, 2^12220631126 is an apocalyptic number.

12220631126 is a deficient number, since it is larger than the sum of its proper divisors (7792159402).

12220631126 is a wasteful number, since it uses less digits than its factorization.

12220631126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427627.

The product of its (nonzero) digits is 1728, while the sum is 26.

It can be divided in two parts, 12220 and 631126, that added together give a palindrome (643346).

The spelling of 12220631126 in words is "twelve billion, two hundred twenty million, six hundred thirty-one thousand, one hundred twenty-six".