210301321212 has 72 divisors (see below), whose sum is σ = 543418075200. Its totient is φ = 68544171648.

The previous prime is 210301321079. The next prime is 210301321253. The reversal of 210301321212 is 212123103012.

210301321212 is a `hidden beast` number, since 21 + 0 + 301 + 321 + 21 + 2 = 666.

It is a super-2 number, since 2×210301321212² (a number of 23 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1750614 + ... + 1866882.

Almost surely, 2^210301321212 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 210301321212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (271709037600).

210301321212 is an abundant number, since it is smaller than the sum of its proper divisors (333116753988).

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

210301321212 is a wasteful number, since it uses less digits than its factorization.

210301321212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117395 (or 117390 counting only the distinct ones).

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

Adding to 210301321212 its reverse (212123103012), we get a palindrome (422424424224).

The spelling of 210301321212 in words is "two hundred ten billion, three hundred one million, three hundred twenty-one thousand, two hundred twelve".