20210211022212 has 108 divisors (see below), whose sum is σ = 53276738352656. Its totient is φ = 6699091281840.

The previous prime is 20210211022193. The next prime is 20210211022217. The reversal of 20210211022212 is 21222011201202.

It is a happy number.

20210211022212 is a `hidden beast` number, since 20 + 210 + 211 + 0 + 2 + 221 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (108).

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

It is not an unprimeable number, because it can be changed into a prime (20210211022217) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 30819387 + ... + 31468317.

Almost surely, 2^{20210211022212} 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 20210211022212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26638369176328).

20210211022212 is an abundant number, since it is smaller than the sum of its proper divisors (33066527330444).

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

20210211022212 is an equidigital number, since it uses as much as digits as its factorization.

20210211022212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649308 (or 649115 counting only the distinct ones).

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

Adding to 20210211022212 its reverse (21222011201202), we get a palindrome (41432222223414).

The spelling of 20210211022212 in words is "twenty trillion, two hundred ten billion, two hundred eleven million, twenty-two thousand, two hundred twelve".