2211212052125 has 32 divisors (see below), whose sum is σ = 2826556387200. Its totient is φ = 1726475606400.

The previous prime is 2211212052121. The next prime is 2211212052149. The reversal of 2211212052125 is 5212502121122.

It is not a de Polignac number, because 2211212052125 - 2² = 2211212052121 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2211212052094 and 2211212052103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211212052121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53384 + ... + 2103633.

It is an arithmetic number, because the mean of its divisors is an integer number (88329887100).

Almost surely, 2^{2211212052125} is an apocalyptic number.

2211212052125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2211212052125 is a deficient number, since it is larger than the sum of its proper divisors (615344335075).

2211212052125 is a wasteful number, since it uses less digits than its factorization.

2211212052125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2157230 (or 2157220 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 26.

Adding to 2211212052125 its reverse (5212502121122), we get a palindrome (7423714173247).

The spelling of 2211212052125 in words is "two trillion, two hundred eleven billion, two hundred twelve million, fifty-two thousand, one hundred twenty-five".