11211002122 has 4 divisors (see below), whose sum is σ = 16816503186. Its totient is φ = 5605501060.

The previous prime is 11211002113. The next prime is 11211002123. The reversal of 11211002122 is 22120011211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22120011211 = 613 ⋅36084847.

It can be written as a sum of positive squares in only one way, i.e., 9906419961 + 1304582161 = 99531^2 + 36119^2 .

It is not an unprimeable number, because it can be changed into a prime (11211002123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2802750529 + ... + 2802750532.

Almost surely, 2^11211002122 is an apocalyptic number.

11211002122 is a deficient number, since it is larger than the sum of its proper divisors (5605501064).

11211002122 is an equidigital number, since it uses as much as digits as its factorization.

11211002122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5605501063.

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

Adding to 11211002122 its reverse (22120011211), we get a palindrome (33331013333).

The spelling of 11211002122 in words is "eleven billion, two hundred eleven million, two thousand, one hundred twenty-two".