213001402185 has 144 divisors (see below), whose sum is σ = 457783679808. Its totient is φ = 90310982400.

The previous prime is 213001402151. The next prime is 213001402217. The reversal of 213001402185 is 581204100312.

213001402185 is a `hidden beast` number, since 2 + 1 + 300 + 140 + 218 + 5 = 666.

It is not a de Polignac number, because 213001402185 - 2⁹ = 213001401673 is a prime.

It is a super-2 number, since 2×213001402185² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 2277190 + ... + 2368880.

It is an arithmetic number, because the mean of its divisors is an integer number (3179053332).

Almost surely, 2^213001402185 is an apocalyptic number.

It is an amenable number.

213001402185 is an abundant number, since it is smaller than the sum of its proper divisors (244782277623).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213001402185 is a wasteful number, since it uses less digits than its factorization.

213001402185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91764 (or 91742 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

Adding to 213001402185 its reverse (581204100312), we get a palindrome (794205502497).

The spelling of 213001402185 in words is "two hundred thirteen billion, one million, four hundred two thousand, one hundred eighty-five".