22002011121220 has 96 divisors (see below), whose sum is σ = 50362232739840. Its totient is φ = 8025250521600.

The previous prime is 22002011121203. The next prime is 22002011121221. The reversal of 22002011121220 is 2212111020022.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22002011121194 and 22002011121203.

It is not an unprimeable number, because it can be changed into a prime (22002011121221) 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, 296882170 + ... + 296956270.

It is an arithmetic number, because the mean of its divisors is an integer number (524606591040).

Almost surely, 2^{22002011121220} is an apocalyptic number.

22002011121220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22002011121220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25181116369920).

22002011121220 is an abundant number, since it is smaller than the sum of its proper divisors (28360221618620).

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

22002011121220 is a wasteful number, since it uses less digits than its factorization.

22002011121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87965 (or 87963 counting only the distinct ones).

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

Adding to 22002011121220 its reverse (2212111020022), we get a palindrome (24214122141242).

The spelling of 22002011121220 in words is "twenty-two trillion, two billion, eleven million, one hundred twenty-one thousand, two hundred twenty".