100121201012 has 12 divisors (see below), whose sum is σ = 200242402080. Its totient is φ = 42909086136.

The previous prime is 100121201009. The next prime is 100121201029. The reversal of 100121201012 is 210102121001.

100121201012 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 100121200984 and 100121201002.

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 3 ways as a sum of consecutive naturals, for example, 1787878562 + ... + 1787878617.

It is an arithmetic number, because the mean of its divisors is an integer number (16686866840).

Almost surely, 2^100121201012 is an apocalyptic number.

It is an amenable number.

100121201012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

100121201012 is a wasteful number, since it uses less digits than its factorization.

100121201012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3575757190 (or 3575757188 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 100121201012 its reverse (210102121001), we get a palindrome (310223322013).

The spelling of 100121201012 in words is "one hundred billion, one hundred twenty-one million, two hundred one thousand, twelve".