22120221100012 has 96 divisors (see below), whose sum is σ = 45862968412800. Its totient is φ = 9133813850112.

The previous prime is 22120221099997. The next prime is 22120221100027. The reversal of 22120221100012 is 21000112202122.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22120221099997) and next prime (22120221100027).

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, 925171914 + ... + 925195822.

It is an arithmetic number, because the mean of its divisors is an integer number (477739254300).

Almost surely, 2^{22120221100012} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22120221100012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22931484206400).

22120221100012 is an abundant number, since it is smaller than the sum of its proper divisors (23742747312788).

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

22120221100012 is a wasteful number, since it uses less digits than its factorization.

22120221100012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26315 (or 26313 counting only the distinct ones).

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

Adding to 22120221100012 its reverse (21000112202122), we get a palindrome (43120333302134).

The spelling of 22120221100012 in words is "twenty-two trillion, one hundred twenty billion, two hundred twenty-one million, one hundred thousand, twelve".