201021022120212 has 288 divisors, whose sum is σ = 611758043187200. Its totient is φ = 55576069194240.

The previous prime is 201021022120199. The next prime is 201021022120213. The reversal of 201021022120212 is 212021220120102.

It is a happy number.

201021022120212 is a `hidden beast` number, since 2 + 0 + 1 + 0 + 210 + 221 + 20 + 212 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201021022120213) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4768369038 + ... + 4768411194.

Almost surely, 2^{201021022120212} 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 201021022120212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (305879021593600).

201021022120212 is an abundant number, since it is smaller than the sum of its proper divisors (410737021066988).

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

201021022120212 is a wasteful number, since it uses less digits than its factorization.

201021022120212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54676 (or 54657 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 201021022120212 its reverse (212021220120102), we get a palindrome (413042242240314).

The spelling of 201021022120212 in words is "two hundred one trillion, twenty-one billion, twenty-two million, one hundred twenty thousand, two hundred twelve".