212011221102102 has 24 divisors (see below), whose sum is σ = 476370891860136. Its totient is φ = 70670407033872.

The previous prime is 212011221102077. The next prime is 212011221102223. The reversal of 212011221102102 is 201201122110212.

212011221102102 is a `hidden beast` number, since 21 + 201 + 1 + 221 + 10 + 210 + 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 an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 218118539743 + ... + 218118540714.

It is an arithmetic number, because the mean of its divisors is an integer number (19848787160839).

Almost surely, 2^{212011221102102} is an apocalyptic number.

212011221102102 is an abundant number, since it is smaller than the sum of its proper divisors (264359670758034).

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

212011221102102 is an equidigital number, since it uses as much as digits as its factorization.

212011221102102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436237080474 (or 436237080462 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 212011221102102 its reverse (201201122110212), we get a palindrome (413212343212314).

It can be divided in two parts, 21201122110210 and 2, that added together give a palindrome (21201122110212).

The spelling of 212011221102102 in words is "two hundred twelve trillion, eleven billion, two hundred twenty-one million, one hundred two thousand, one hundred two".