121111011122 has 16 divisors (see below), whose sum is σ = 184696551000. Its totient is φ = 59553542400.

The previous prime is 121111011107. The next prime is 121111011139. The reversal of 121111011122 is 221110111121.

It can be written as a sum of positive squares in 4 ways, for example, as 87402418321 + 33708592801 = 295639^2 + 183599^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121111011097 and 121111011106.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1981847 + ... + 2042042.

Almost surely, 2^121111011122 is an apocalyptic number.

121111011122 is a deficient number, since it is larger than the sum of its proper divisors (63585539878).

121111011122 is a wasteful number, since it uses less digits than its factorization.

121111011122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4024141.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 121111011122 its reverse (221110111121), we get a palindrome (342221122243).

Subtracting 121111011122 from its reverse (221110111121), we obtain a palindrome (99999099999).

The spelling of 121111011122 in words is "one hundred twenty-one billion, one hundred eleven million, eleven thousand, one hundred twenty-two".