11212013122 has 4 divisors (see below), whose sum is σ = 16818019686. Its totient is φ = 5606006560.

The previous prime is 11212013081. The next prime is 11212013149. The reversal of 11212013122 is 22131021211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11193428401 + 18584721 = 105799^2 + 4311^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11212013096 and 11212013105.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2803003279 + ... + 2803003282.

Almost surely, 2^11212013122 is an apocalyptic number.

11212013122 is a deficient number, since it is larger than the sum of its proper divisors (5606006564).

11212013122 is an equidigital number, since it uses as much as digits as its factorization.

11212013122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5606006563.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 11212013122 its reverse (22131021211), we get a palindrome (33343034333).

The spelling of 11212013122 in words is "eleven billion, two hundred twelve million, thirteen thousand, one hundred twenty-two".