212101233102 has 80 divisors (see below), whose sum is σ = 519536426112. Its totient is φ = 64140860880.

The previous prime is 212101233059. The next prime is 212101233103. The reversal of 212101233102 is 201332101212.

212101233102 is a `hidden beast` number, since 21 + 210 + 123 + 310 + 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 not an unprimeable number, because it can be changed into a prime (212101233103) 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, 745633 + ... + 990035.

Almost surely, 2^212101233102 is an apocalyptic number.

212101233102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 212101233102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (259768213056).

212101233102 is an abundant number, since it is smaller than the sum of its proper divisors (307435193010).

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

212101233102 is a wasteful number, since it uses less digits than its factorization.

212101233102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244915 (or 244906 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 212101233102 its reverse (201332101212), we get a palindrome (413433334314).

The spelling of 212101233102 in words is "two hundred twelve billion, one hundred one million, two hundred thirty-three thousand, one hundred two".