211121333112125 has 8 divisors (see below), whose sum is σ = 263479423724088. Its totient is φ = 168897066489600.

The previous prime is 211121333112113. The next prime is 211121333112181. The reversal of 211121333112125 is 521211333121112.

It can be written as a sum of positive squares in 4 ways, for example, as 66911712881764 + 144209620230361 = 8179958^2 + 12008731^2 .

It is not a de Polignac number, because 211121333112125 - 2³⁸ = 210846455205181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 844485332324 + ... + 844485332573.

It is an arithmetic number, because the mean of its divisors is an integer number (32934927965511).

Almost surely, 2^{211121333112125} is an apocalyptic number.

211121333112125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

211121333112125 is a deficient number, since it is larger than the sum of its proper divisors (52358090611963).

211121333112125 is an equidigital number, since it uses as much as digits as its factorization.

211121333112125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1688970664912 (or 1688970664902 counting only the distinct ones).

The product of its digits is 2160, while the sum is 29.

Adding to 211121333112125 its reverse (521211333121112), we get a palindrome (732332666233237).

The spelling of 211121333112125 in words is "two hundred eleven trillion, one hundred twenty-one billion, three hundred thirty-three million, one hundred twelve thousand, one hundred twenty-five".