213121302198 has 96 divisors (see below), whose sum is σ = 516969573120. Its totient is φ = 57367517760.

The previous prime is 213121302187. The next prime is 213121302221. The reversal of 213121302198 is 891203121312.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2705493 + ... + 2783151.

It is an arithmetic number, because the mean of its divisors is an integer number (5385099720).

Almost surely, 2^213121302198 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213121302198, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (258484786560).

213121302198 is an abundant number, since it is smaller than the sum of its proper divisors (303848270922).

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

213121302198 is a wasteful number, since it uses less digits than its factorization.

213121302198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77890 (or 77871 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The spelling of 213121302198 in words is "two hundred thirteen billion, one hundred twenty-one million, three hundred two thousand, one hundred ninety-eight".