11212221022 has 16 divisors (see below), whose sum is σ = 17132711472. Its totient is φ = 5501733120.

The previous prime is 11212220993. The next prime is 11212221023. The reversal of 11212221022 is 22012221211.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 11212220987 and 11212221005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212221023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49683 + ... + 157774.

It is an arithmetic number, because the mean of its divisors is an integer number (1070794467).

Almost surely, 2^11212221022 is an apocalyptic number.

11212221022 is a deficient number, since it is larger than the sum of its proper divisors (5920490450).

11212221022 is a wasteful number, since it uses less digits than its factorization.

11212221022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207963.

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

Adding to 11212221022 its reverse (22012221211), we get a palindrome (33224442233).

The spelling of 11212221022 in words is "eleven billion, two hundred twelve million, two hundred twenty-one thousand, twenty-two".