122221111126 has 4 divisors (see below), whose sum is σ = 183331666692. Its totient is φ = 61110555562.

The previous prime is 122221111093. The next prime is 122221111127. The reversal of 122221111126 is 621111122221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 621111122221 = 431 ⋅1441093091.

It is a junction number, because it is equal to n+sod(n) for n = 122221111097 and 122221111106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122221111127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30555277780 + ... + 30555277783.

It is an arithmetic number, because the mean of its divisors is an integer number (45832916673).

Almost surely, 2^122221111126 is an apocalyptic number.

122221111126 is a deficient number, since it is larger than the sum of its proper divisors (61110555566).

122221111126 is an equidigital number, since it uses as much as digits as its factorization.

122221111126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61110555565.

The product of its digits is 192, while the sum is 22.

Adding to 122221111126 its reverse (621111122221), we get a palindrome (743332233347).

The spelling of 122221111126 in words is "one hundred twenty-two billion, two hundred twenty-one million, one hundred eleven thousand, one hundred twenty-six".