20120212212102 has 192 divisors, whose sum is σ = 46796231297088. Its totient is φ = 6238218240000.

The previous prime is 20120212212043. The next prime is 20120212212181. The reversal of 20120212212102 is 20121221202102.

It is a happy number.

20120212212102 is a `hidden beast` number, since 20 + 120 + 212 + 212 + 102 = 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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 267479277 + ... + 267554487.

It is an arithmetic number, because the mean of its divisors is an integer number (243730371339).

Almost surely, 2^{20120212212102} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20120212212102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23398115648544).

20120212212102 is an abundant number, since it is smaller than the sum of its proper divisors (26676019084986).

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

20120212212102 is a wasteful number, since it uses less digits than its factorization.

20120212212102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75495 (or 75492 counting only the distinct ones).

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

Adding to 20120212212102 its reverse (20121221202102), we get a palindrome (40241433414204).

The spelling of 20120212212102 in words is "twenty trillion, one hundred twenty billion, two hundred twelve million, two hundred twelve thousand, one hundred two".