215213221035 has 12 divisors (see below), whose sum is σ = 373036249872. Its totient is φ = 114780384528.

The previous prime is 215213221033. The next prime is 215213221061. The reversal of 215213221035 is 530122312512.

215213221035 is a `hidden beast` number, since 2 + 1 + 521 + 32 + 2 + 103 + 5 = 666.

215213221035 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 215213221035 - 2¹ = 215213221033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (215213221033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2391257967 + ... + 2391258056.

It is an arithmetic number, because the mean of its divisors is an integer number (31086354156).

Almost surely, 2^215213221035 is an apocalyptic number.

215213221035 is a deficient number, since it is larger than the sum of its proper divisors (157823028837).

215213221035 is a wasteful number, since it uses less digits than its factorization.

215213221035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4782516034 (or 4782516031 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 215213221035 its reverse (530122312512), we get a palindrome (745335533547).

The spelling of 215213221035 in words is "two hundred fifteen billion, two hundred thirteen million, two hundred twenty-one thousand, thirty-five".