10221021120 has 224 divisors, whose sum is σ = 34322918400. Its totient is φ = 2569826304.

The previous prime is 10221021119. The next prime is 10221021121. The reversal of 10221021120 is 2112012201.

It is an interprime number because it is at equal distance from previous prime (10221021119) and next prime (10221021121).

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 = 10221021096 and 10221021105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221021121) 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, 4175737 + ... + 4178183.

Almost surely, 2^10221021120 is an apocalyptic number.

10221021120 is a gapful number since it is divisible by the number (10) 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 10221021120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17161459200).

10221021120 is an abundant number, since it is smaller than the sum of its proper divisors (24101897280).

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

10221021120 is a wasteful number, since it uses less digits than its factorization.

10221021120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2715 (or 2705 counting only the distinct ones).

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

Adding to 10221021120 its reverse (2112012201), we get a palindrome (12333033321).

The spelling of 10221021120 in words is "ten billion, two hundred twenty-one million, twenty-one thousand, one hundred twenty".