22120021016 has 32 divisors (see below), whose sum is σ = 41677513200. Its totient is φ = 11006123520.

The previous prime is 22120021013. The next prime is 22120021031. The reversal of 22120021016 is 61012002122.

It is a junction number, because it is equal to n+sod(n) for n = 22120020985 and 22120021003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22120021013) 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, 1812551 + ... + 1824713.

Almost surely, 2^22120021016 is an apocalyptic number.

It is an amenable number.

22120021016 is a deficient number, since it is larger than the sum of its proper divisors (19557492184).

22120021016 is a wasteful number, since it uses less digits than its factorization.

22120021016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13259 (or 13255 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 22120021016 its reverse (61012002122), we get a palindrome (83132023138).

The spelling of 22120021016 in words is "twenty-two billion, one hundred twenty million, twenty-one thousand, sixteen".