111210002122 has 4 divisors (see below), whose sum is σ = 166815003186. Its totient is φ = 55605001060.

The previous prime is 111210002119. The next prime is 111210002149. The reversal of 111210002122 is 221200012111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 221200012111 = 13 ⋅17015385547.

It can be written as a sum of positive squares in only one way, i.e., 108933662601 + 2276339521 = 330051^2 + 47711^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27802500529 + ... + 27802500532.

Almost surely, 2^111210002122 is an apocalyptic number.

111210002122 is a deficient number, since it is larger than the sum of its proper divisors (55605001064).

111210002122 is an equidigital number, since it uses as much as digits as its factorization.

111210002122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55605001063.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 111210002122 its reverse (221200012111), we get a palindrome (332410014233).

The spelling of 111210002122 in words is "one hundred eleven billion, two hundred ten million, two thousand, one hundred twenty-two".