11021222122 has 4 divisors (see below), whose sum is σ = 16531833186. Its totient is φ = 5510611060.

The previous prime is 11021222101. The next prime is 11021222123. The reversal of 11021222122 is 22122212011.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22122212011 = 401 ⋅55167611.

It can be written as a sum of positive squares in only one way, i.e., 9006199801 + 2015022321 = 94901^2 + 44889^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11021222096 and 11021222105.

It is not an unprimeable number, because it can be changed into a prime (11021222123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2755305529 + ... + 2755305532.

Almost surely, 2^11021222122 is an apocalyptic number.

11021222122 is a deficient number, since it is larger than the sum of its proper divisors (5510611064).

11021222122 is an equidigital number, since it uses as much as digits as its factorization.

11021222122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5510611063.

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

Adding to 11021222122 its reverse (22122212011), we get a palindrome (33143434133).

The spelling of 11021222122 in words is "eleven billion, twenty-one million, two hundred twenty-two thousand, one hundred twenty-two".