212102121110010 has 128 divisors (see below), whose sum is σ = 524127495640320. Its totient is φ = 54892630001664.

The previous prime is 212102121109993. The next prime is 212102121110023. The reversal of 212102121110010 is 10011121201212.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 867523702 + ... + 867768158.

It is an arithmetic number, because the mean of its divisors is an integer number (4094746059690).

Almost surely, 2^{212102121110010} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212102121110010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (262063747820160).

212102121110010 is an abundant number, since it is smaller than the sum of its proper divisors (312025374530310).

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

212102121110010 is a wasteful number, since it uses less digits than its factorization.

212102121110010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246480.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 212102121110010 its reverse (10011121201212), we get a palindrome (222113242311222).

The spelling of 212102121110010 in words is "two hundred twelve trillion, one hundred two billion, one hundred twenty-one million, one hundred ten thousand, ten".