213220033404 has 96 divisors (see below), whose sum is σ = 582497051136. Its totient is φ = 59432970240.

The previous prime is 213220033391. The next prime is 213220033423. The reversal of 213220033404 is 404330022312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3061044 + ... + 3129924.

It is an arithmetic number, because the mean of its divisors is an integer number (6067677616).

Almost surely, 2^213220033404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213220033404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (291248525568).

213220033404 is an abundant number, since it is smaller than the sum of its proper divisors (369277017732).

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

213220033404 is a wasteful number, since it uses less digits than its factorization.

213220033404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69795 (or 69793 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 213220033404 its reverse (404330022312), we get a palindrome (617550055716).

The spelling of 213220033404 in words is "two hundred thirteen billion, two hundred twenty million, thirty-three thousand, four hundred four".