211225113 has 12 divisors (see below), whose sum is σ = 332839728. Its totient is φ = 128015160.

The previous prime is 211225111. The next prime is 211225117. The reversal of 211225113 is 311522112.

It is not a de Polignac number, because 211225113 - 2¹ = 211225111 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211225111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1066695 + ... + 1066892.

It is an arithmetic number, because the mean of its divisors is an integer number (27736644).

Almost surely, 2^211225113 is an apocalyptic number.

It is an amenable number.

211225113 is a deficient number, since it is larger than the sum of its proper divisors (121614615).

211225113 is a wasteful number, since it uses less digits than its factorization.

211225113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2133604 (or 2133601 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 211225113 is about 14533.5856897051. The cubic root of 211225113 is about 595.5458240174.

Adding to 211225113 its reverse (311522112), we get a palindrome (522747225).

It can be divided in two parts, 2112 and 25113, that added together give a square (27225 = 165²).

The spelling of 211225113 in words is "two hundred eleven million, two hundred twenty-five thousand, one hundred thirteen".