213101023212 has 288 divisors, whose sum is σ = 689850330624. Its totient is φ = 53853465600.

The previous prime is 213101023193. The next prime is 213101023271. The reversal of 213101023212 is 212320101312.

213101023212 is a `hidden beast` number, since 21 + 310 + 10 + 2 + 321 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 45117483 + ... + 45122205.

It is an arithmetic number, because the mean of its divisors is an integer number (2395313648).

Almost surely, 2^213101023212 is an apocalyptic number.

213101023212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213101023212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (344925165312).

213101023212 is an abundant number, since it is smaller than the sum of its proper divisors (476749307412).

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

213101023212 is a wasteful number, since it uses less digits than its factorization.

213101023212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5189 (or 5184 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 213101023212 its reverse (212320101312), we get a palindrome (425421124524).

The spelling of 213101023212 in words is "two hundred thirteen billion, one hundred one million, twenty-three thousand, two hundred twelve".