22101021120 has 112 divisors (see below), whose sum is σ = 70959451680. Its totient is φ = 5827362816.

The previous prime is 22101021113. The next prime is 22101021169. The reversal of 22101021120 is 2112010122.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 22101021096 and 22101021105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43897 + ... + 214776.

Almost surely, 2^22101021120 is an apocalyptic number.

22101021120 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 22101021120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35479725840).

22101021120 is an abundant number, since it is smaller than the sum of its proper divisors (48858430560).

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

22101021120 is a wasteful number, since it uses less digits than its factorization.

22101021120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258782 (or 258772 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 22101021120 its reverse (2112010122), we get a palindrome (24213031242).

The spelling of 22101021120 in words is "twenty-two billion, one hundred one million, twenty-one thousand, one hundred twenty".