212010222021102 has 128 divisors (see below), whose sum is σ = 491283109440000. Its totient is φ = 67728659120640.

The previous prime is 212010222021083. The next prime is 212010222021109. The reversal of 212010222021102 is 201120222010212.

It is a happy number.

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 (212010222021109) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 17134149 + ... + 26788047.

It is an arithmetic number, because the mean of its divisors is an integer number (3838149292500).

Almost surely, 2^{212010222021102} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212010222021102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245641554720000).

212010222021102 is an abundant number, since it is smaller than the sum of its proper divisors (279272887418898).

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

212010222021102 is a wasteful number, since it uses less digits than its factorization.

212010222021102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9654143 (or 9654137 counting only the distinct ones).

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

Adding to 212010222021102 its reverse (201120222010212), we get a palindrome (413130444031314).

The spelling of 212010222021102 in words is "two hundred twelve trillion, ten billion, two hundred twenty-two million, twenty-one thousand, one hundred two".