2211311121225 has 24 divisors (see below), whose sum is σ = 3662117713632. Its totient is φ = 1177403568000.

The previous prime is 2211311121199. The next prime is 2211311121233. The reversal of 2211311121225 is 5221211131122.

It is not a de Polignac number, because 2211311121225 - 2¹⁷ = 2211310990153 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2211311121195 and 2211311121204.

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, 24484167 + ... + 24574316.

It is an arithmetic number, because the mean of its divisors is an integer number (152588238068).

Almost surely, 2^{2211311121225} is an apocalyptic number.

2211311121225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2211311121225 is a deficient number, since it is larger than the sum of its proper divisors (1450806592407).

2211311121225 is a wasteful number, since it uses less digits than its factorization.

2211311121225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49059097 (or 49059092 counting only the distinct ones).

The product of its digits is 480, while the sum is 24.

Adding to 2211311121225 its reverse (5221211131122), we get a palindrome (7432522252347).

The spelling of 2211311121225 in words is "two trillion, two hundred eleven billion, three hundred eleven million, one hundred twenty-one thousand, two hundred twenty-five".