111211121202122 has 8 divisors (see below), whose sum is σ = 168468332118372. Its totient is φ = 55055010496000.

The previous prime is 111211121202107. The next prime is 111211121202127. The reversal of 111211121202122 is 221202121112111.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 106087548614161 + 5123572587961 = 10299881^2 + 2263531^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 111211121202094 and 111211121202103.

It is not an unprimeable number, because it can be changed into a prime (111211121202127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275275052279 + ... + 275275052682.

Almost surely, 2^{111211121202122} is an apocalyptic number.

111211121202122 is a deficient number, since it is larger than the sum of its proper divisors (57257210916250).

111211121202122 is a wasteful number, since it uses less digits than its factorization.

111211121202122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550550105064.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 111211121202122 its reverse (221202121112111), we get a palindrome (332413242314233).

The spelling of 111211121202122 in words is "one hundred eleven trillion, two hundred eleven billion, one hundred twenty-one million, two hundred two thousand, one hundred twenty-two".