12221111000122 has 4 divisors (see below), whose sum is σ = 18331666500186. Its totient is φ = 6110555500060.

The previous prime is 12221111000107. The next prime is 12221111000123. The reversal of 12221111000122 is 22100011112221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11896918554481 + 324192445641 = 3449191^2 + 569379^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12221111000096 and 12221111000105.

It is not an unprimeable number, because it can be changed into a prime (12221111000123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3055277750029 + ... + 3055277750032.

Almost surely, 2^{12221111000122} is an apocalyptic number.

12221111000122 is a deficient number, since it is larger than the sum of its proper divisors (6110555500064).

12221111000122 is an equidigital number, since it uses as much as digits as its factorization.

12221111000122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6110555500063.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12221111000122 its reverse (22100011112221), we get a palindrome (34321122112343).

The spelling of 12221111000122 in words is "twelve trillion, two hundred twenty-one billion, one hundred eleven million, one hundred twenty-two", and thus it is an aban number.