11222121022 has 64 divisors (see below), whose sum is σ = 20848320000. Its totient is φ = 4512848256.

The previous prime is 11222120989. The next prime is 11222121023. The reversal of 11222121022 is 22012122211.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 11222120987 and 11222121005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11222121023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4418629 + ... + 4421167.

It is an arithmetic number, because the mean of its divisors is an integer number (325755000).

Almost surely, 2^11222121022 is an apocalyptic number.

11222121022 is a deficient number, since it is larger than the sum of its proper divisors (9626198978).

11222121022 is a wasteful number, since it uses less digits than its factorization.

11222121022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2958 (or 2944 counting only the distinct ones).

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

Adding to 11222121022 its reverse (22012122211), we get a palindrome (33234243233).

The spelling of 11222121022 in words is "eleven billion, two hundred twenty-two million, one hundred twenty-one thousand, twenty-two".