212211221112102 has 16 divisors (see below), whose sum is σ = 426576870867312. Its totient is φ = 70378002263520.

The previous prime is 212211221112083. The next prime is 212211221112113. The reversal of 212211221112102 is 201211122112212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89767858849 + ... + 89767861212.

It is an arithmetic number, because the mean of its divisors is an integer number (26661054429207).

Almost surely, 2^{212211221112102} is an apocalyptic number.

212211221112102 is an abundant number, since it is smaller than the sum of its proper divisors (214365649755210).

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

212211221112102 is a wasteful number, since it uses less digits than its factorization.

212211221112102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179535720263.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 212211221112102 its reverse (201211122112212), we get a palindrome (413422343224314).

The spelling of 212211221112102 in words is "two hundred twelve trillion, two hundred eleven billion, two hundred twenty-one million, one hundred twelve thousand, one hundred two".