10111222125 has 24 divisors (see below), whose sum is σ = 18227165112. Its totient is φ = 5392651200.

The previous prime is 10111222123. The next prime is 10111222133. The reversal of 10111222125 is 52122211101.

It can be written as a sum of positive squares in 4 ways, for example, as 28451556 + 10082770569 = 5334^2 + 100413^2 .

It is not a de Polignac number, because 10111222125 - 2¹ = 10111222123 is a prime.

It is a super-2 number, since 2×10111222125² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10111222098 and 10111222107.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 4492752 + ... + 4495001.

It is an arithmetic number, because the mean of its divisors is an integer number (759465213).

Almost surely, 2^10111222125 is an apocalyptic number.

10111222125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10111222125 is a deficient number, since it is larger than the sum of its proper divisors (8115942987).

10111222125 is an equidigital number, since it uses as much as digits as its factorization.

10111222125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8987774 (or 8987761 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

Adding to 10111222125 its reverse (52122211101), we get a palindrome (62233433226).

The spelling of 10111222125 in words is "ten billion, one hundred eleven million, two hundred twenty-two thousand, one hundred twenty-five".