1012111225 has 24 divisors (see below), whose sum is σ = 1267418880. Its totient is φ = 801736320.

The previous prime is 1012111189. The next prime is 1012111231. The reversal of 1012111225 is 5221112101.

It is not a de Polignac number, because 1012111225 - 2⁹ = 1012110713 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1012111199 and 1012111208.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1391812 + ... + 1392538.

It is an arithmetic number, because the mean of its divisors is an integer number (52809120).

Almost surely, 2^1012111225 is an apocalyptic number.

It is an amenable number.

1012111225 is a deficient number, since it is larger than the sum of its proper divisors (255307655).

1012111225 is a wasteful number, since it uses less digits than its factorization.

1012111225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1209 (or 1204 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 16.

The square root of 1012111225 is about 31813.6955571024. The cubic root of 1012111225 is about 1004.0208858081.

Adding to 1012111225 its reverse (5221112101), we get a palindrome (6233223326).

The spelling of 1012111225 in words is "one billion, twelve million, one hundred eleven thousand, two hundred twenty-five".