210022021021212 has 120 divisors (see below), whose sum is σ = 553670749166304. Its totient is φ = 69418588906368.

The previous prime is 210022021021123. The next prime is 210022021021217. The reversal of 210022021021212 is 212120120220012.

It is a happy number.

210022021021212 is a `hidden beast` number, since 2 + 1 + 0 + 0 + 220 + 210 + 21 + 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 (210022021021217) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 20533738 + ... + 29011694.

Almost surely, 2^{210022021021212} 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 210022021021212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276835374583152).

210022021021212 is an abundant number, since it is smaller than the sum of its proper divisors (343648728145092).

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

210022021021212 is a wasteful number, since it uses less digits than its factorization.

210022021021212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8478617 (or 8478606 counting only the distinct ones).

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

Adding to 210022021021212 its reverse (212120120220012), we get a palindrome (422142141241224).

The spelling of 210022021021212 in words is "two hundred ten trillion, twenty-two billion, twenty-one million, twenty-one thousand, two hundred twelve".