212465121 has 16 divisors (see below), whose sum is σ = 310944000. Its totient is φ = 127973520.

The previous prime is 212465119. The next prime is 212465159. The reversal of 212465121 is 121564212.

It is not a de Polignac number, because 212465121 - 2¹ = 212465119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212465091 and 212465100.

It is not an unprimeable number, because it can be changed into a prime (212465621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14371 + ... + 25128.

It is an arithmetic number, because the mean of its divisors is an integer number (19434000).

Almost surely, 2^212465121 is an apocalyptic number.

It is an amenable number.

212465121 is a deficient number, since it is larger than the sum of its proper divisors (98478879).

212465121 is a wasteful number, since it uses less digits than its factorization.

212465121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39676.

The product of its digits is 960, while the sum is 24.

The square root of 212465121 is about 14576.1833481882. The cubic root of 212465121 is about 596.7089451574.

Subtracting from 212465121 its reverse (121564212), we obtain a palindrome (90900909).

The spelling of 212465121 in words is "two hundred twelve million, four hundred sixty-five thousand, one hundred twenty-one".