10111222120 has 16 divisors (see below), whose sum is σ = 22750249860. Its totient is φ = 4044488832.

The previous prime is 10111222111. The next prime is 10111222123. The reversal of 10111222120 is 2122211101.

It can be written as a sum of positive squares in 2 ways, for example, as 9797436324 + 313785796 = 98982^2 + 17714^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 10111222120.

It is not an unprimeable number, because it can be changed into a prime (10111222123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126390237 + ... + 126390316.

Almost surely, 2^10111222120 is an apocalyptic number.

10111222120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10111222120 is an abundant number, since it is smaller than the sum of its proper divisors (12639027740).

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

10111222120 is a wasteful number, since it uses less digits than its factorization.

10111222120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252780564 (or 252780560 counting only the distinct ones).

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

Adding to 10111222120 its reverse (2122211101), we get a palindrome (12233433221).

The spelling of 10111222120 in words is "ten billion, one hundred eleven million, two hundred twenty-two thousand, one hundred twenty".