121111202122 has 4 divisors (see below), whose sum is σ = 181666803186. Its totient is φ = 60555601060.

The previous prime is 121111202071. The next prime is 121111202159. The reversal of 121111202122 is 221202111121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 221202111121 = 43867 ⋅5042563.

It can be written as a sum of positive squares in only one way, i.e., 65112239241 + 55998962881 = 255171^2 + 236641^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121111202096 and 121111202105.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30277800529 + ... + 30277800532.

Almost surely, 2^121111202122 is an apocalyptic number.

121111202122 is a deficient number, since it is larger than the sum of its proper divisors (60555601064).

121111202122 is an equidigital number, since it uses as much as digits as its factorization.

121111202122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60555601063.

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

Adding to 121111202122 its reverse (221202111121), we get a palindrome (342313313243).

The spelling of 121111202122 in words is "one hundred twenty-one billion, one hundred eleven million, two hundred two thousand, one hundred twenty-two".