210231222012 has 96 divisors (see below), whose sum is σ = 623631052800. Its totient is φ = 59996275776.

The previous prime is 210231221957. The next prime is 210231222053. The reversal of 210231222012 is 210222132012.

210231222012 is a `hidden beast` number, since 210 + 231 + 2 + 220 + 1 + 2 = 666.

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 31 ways as a sum of consecutive naturals, for example, 491314 + ... + 813542.

It is an arithmetic number, because the mean of its divisors is an integer number (6496156800).

Almost surely, 2^210231222012 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 210231222012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (311815526400).

210231222012 is an abundant number, since it is smaller than the sum of its proper divisors (413399830788).

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

210231222012 is a wasteful number, since it uses less digits than its factorization.

210231222012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323112 (or 323104 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 210231222012 its reverse (210222132012), we get a palindrome (420453354024).

The spelling of 210231222012 in words is "two hundred ten billion, two hundred thirty-one million, two hundred twenty-two thousand, twelve".