22121021122 has 4 divisors (see below), whose sum is σ = 33181531686. Its totient is φ = 11060510560.

The previous prime is 22121021119. The next prime is 22121021177. The reversal of 22121021122 is 22112012122.

It is a happy number.

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., 14774645601 + 7346375521 = 121551^2 + 85711^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22121021096 and 22121021105.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5530255279 + ... + 5530255282.

Almost surely, 2^22121021122 is an apocalyptic number.

22121021122 is a deficient number, since it is larger than the sum of its proper divisors (11060510564).

22121021122 is a wasteful number, since it uses less digits than its factorization.

22121021122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11060510563.

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

Adding to 22121021122 its reverse (22112012122), we get a palindrome (44233033244).

The spelling of 22121021122 in words is "twenty-two billion, one hundred twenty-one million, twenty-one thousand, one hundred twenty-two".