212121022110102 has 48 divisors (see below), whose sum is σ = 544705834563072. Its totient is φ = 60606006316200.

The previous prime is 212121022110061. The next prime is 212121022110119. The reversal of 212121022110102 is 201011220121212.

212121022110102 is a `hidden beast` number, since 2 + 121 + 210 + 221 + 10 + 102 = 666.

It is a super-3 number, since 3×212121022110102³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 23 ways as a sum of consecutive naturals, for example, 31175925774 + ... + 31175932577.

It is an arithmetic number, because the mean of its divisors is an integer number (11348038220064).

Almost surely, 2^{212121022110102} is an apocalyptic number.

212121022110102 is an abundant number, since it is smaller than the sum of its proper divisors (332584812452970).

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

212121022110102 is an equidigital number, since it uses as much as digits as its factorization.

212121022110102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62351858375 (or 62351858363 counting only the distinct ones).

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

Adding to 212121022110102 its reverse (201011220121212), we get a palindrome (413132242231314).

The spelling of 212121022110102 in words is "two hundred twelve trillion, one hundred twenty-one billion, twenty-two million, one hundred ten thousand, one hundred two".