10211122120 has 64 divisors (see below), whose sum is σ = 24218812800. Its totient is φ = 3863946240.

The previous prime is 10211122109. The next prime is 10211122127. The reversal of 10211122120 is 2122111201.

It is a self number, because there is not a number n which added to its sum of digits gives 10211122120.

It is not an unprimeable number, because it can be changed into a prime (10211122127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 543280 + ... + 561760.

It is an arithmetic number, because the mean of its divisors is an integer number (378418950).

Almost surely, 2^10211122120 is an apocalyptic number.

10211122120 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 10211122120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12109406400).

10211122120 is an abundant number, since it is smaller than the sum of its proper divisors (14007690680).

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

10211122120 is a wasteful number, since it uses less digits than its factorization.

10211122120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19238 (or 19234 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 10211122120 its reverse (2122111201), we get a palindrome (12333233321).

The spelling of 10211122120 in words is "ten billion, two hundred eleven million, one hundred twenty-two thousand, one hundred twenty".