10221111120 has 160 divisors (see below), whose sum is σ = 34909087104. Its totient is φ = 2453248000.

The previous prime is 10221111101. The next prime is 10221111163. The reversal of 10221111120 is 2111112201.

It is a super-2 number, since 2×10221111120² (a number of 21 digits) contains 22 as substring.

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 = 10221111096 and 10221111105.

It is a congruent number.

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, 247474 + ... + 285806.

Almost surely, 2^10221111120 is an apocalyptic number.

10221111120 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 10221111120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17454543552).

10221111120 is an abundant number, since it is smaller than the sum of its proper divisors (24687975984).

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

10221111120 is a wasteful number, since it uses less digits than its factorization.

10221111120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38461 (or 38455 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 10221111120 its reverse (2111112201), we get a palindrome (12332223321).

The spelling of 10221111120 in words is "ten billion, two hundred twenty-one million, one hundred eleven thousand, one hundred twenty".