100121222122012 has 144 divisors (see below), whose sum is σ = 235876869976608. Its totient is φ = 36722093506560.

The previous prime is 100121222121967. The next prime is 100121222122039. The reversal of 100121222122012 is 210221222121001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14347189 + ... + 20151532.

It is an arithmetic number, because the mean of its divisors is an integer number (1638033819282).

Almost surely, 2^{100121222122012} is an apocalyptic number.

It is an amenable number.

100121222122012 is an abundant number, since it is smaller than the sum of its proper divisors (135755647854596).

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

100121222122012 is a wasteful number, since it uses less digits than its factorization.

100121222122012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34498836 (or 34498827 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 100121222122012 its reverse (210221222121001), we get a palindrome (310342444243013).

The spelling of 100121222122012 in words is "one hundred trillion, one hundred twenty-one billion, two hundred twenty-two million, one hundred twenty-two thousand, twelve".