111220202122 has 16 divisors (see below), whose sum is σ = 169616302344. Its totient is φ = 54681984000.

The previous prime is 111220202099. The next prime is 111220202129. The reversal of 111220202122 is 221202022111.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 105598351681 + 5621850441 = 324959^2 + 74979^2 .

It is a junction number, because it is equal to n+sod(n) for n = 111220202096 and 111220202105.

It is not an unprimeable number, because it can be changed into a prime (111220202129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 274422 + ... + 545662.

Almost surely, 2^111220202122 is an apocalyptic number.

111220202122 is a deficient number, since it is larger than the sum of its proper divisors (58396100222).

111220202122 is a wasteful number, since it uses less digits than its factorization.

111220202122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274665.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 111220202122 its reverse (221202022111), we get a palindrome (332422224233).

The spelling of 111220202122 in words is "one hundred eleven billion, two hundred twenty million, two hundred two thousand, one hundred twenty-two".