100121012122 has 16 divisors (see below), whose sum is σ = 152472081960. Its totient is φ = 49299086592.

The previous prime is 100121012111. The next prime is 100121012129. The reversal of 100121012122 is 221210121001.

It can be written as a sum of positive squares in 4 ways, for example, as 56886543081 + 43234469041 = 238509^2 + 207929^2 .

It is not an unprimeable number, because it can be changed into a prime (100121012129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 429747 + ... + 620422.

Almost surely, 2^100121012122 is an apocalyptic number.

100121012122 is a deficient number, since it is larger than the sum of its proper divisors (52351069838).

100121012122 is a wasteful number, since it uses less digits than its factorization.

100121012122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050897.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 100121012122 its reverse (221210121001), we get a palindrome (321331133123).

The spelling of 100121012122 in words is "one hundred billion, one hundred twenty-one million, twelve thousand, one hundred twenty-two".