213021210412 has 24 divisors (see below), whose sum is σ = 396920910960. Its totient is φ = 99685240320.

The previous prime is 213021210299. The next prime is 213021210427. The reversal of 213021210412 is 214012120312.

213021210412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 213021210412.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 8738289 + ... + 8762632.

It is an arithmetic number, because the mean of its divisors is an integer number (16538371290).

Almost surely, 2^213021210412 is an apocalyptic number.

It is an amenable number.

213021210412 is a deficient number, since it is larger than the sum of its proper divisors (183899700548).

213021210412 is a wasteful number, since it uses less digits than its factorization.

213021210412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17501121 (or 17501119 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 213021210412 its reverse (214012120312), we get a palindrome (427033330724).

The spelling of 213021210412 in words is "two hundred thirteen billion, twenty-one million, two hundred ten thousand, four hundred twelve".