100212120078 has 32 divisors (see below), whose sum is σ = 229124507136. Its totient is φ = 28623505248.

The previous prime is 100212120059. The next prime is 100212120079. The reversal of 100212120078 is 870021212001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100212120079) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 212026 + ... + 495357.

It is an arithmetic number, because the mean of its divisors is an integer number (7160140848).

Almost surely, 2^100212120078 is an apocalyptic number.

100212120078 is an abundant number, since it is smaller than the sum of its proper divisors (128912387058).

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

100212120078 is a wasteful number, since it uses less digits than its factorization.

100212120078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710768.

The product of its (nonzero) digits is 448, while the sum is 24.

Adding to 100212120078 its reverse (870021212001), we get a palindrome (970233332079).

The spelling of 100212120078 in words is "one hundred billion, two hundred twelve million, one hundred twenty thousand, seventy-eight".