11211222022 has 64 divisors (see below), whose sum is σ = 22715126784. Its totient is φ = 4007744640.

The previous prime is 11211222017. The next prime is 11211222031. The reversal of 11211222022 is 22022211211.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 11211221987 and 11211222005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 317568 + ... + 351100.

It is an arithmetic number, because the mean of its divisors is an integer number (354923856).

Almost surely, 2^11211222022 is an apocalyptic number.

11211222022 is an abundant number, since it is smaller than the sum of its proper divisors (11503904762).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11211222022 is a wasteful number, since it uses less digits than its factorization.

11211222022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33733.

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

Adding to 11211222022 its reverse (22022211211), we get a palindrome (33233433233).

The spelling of 11211222022 in words is "eleven billion, two hundred eleven million, two hundred twenty-two thousand, twenty-two".