100000121211 has 32 divisors (see below), whose sum is σ = 155236608000. Its totient is φ = 63501286464.

The previous prime is 100000121209. The next prime is 100000121219. The reversal of 100000121211 is 112121000001.

It is a happy number.

It is not a de Polignac number, because 100000121211 - 2¹ = 100000121209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 100000121193 and 100000121202.

It is not an unprimeable number, because it can be changed into a prime (100000121219) 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 31 ways as a sum of consecutive naturals, for example, 188466 + ... + 485303.

It is an arithmetic number, because the mean of its divisors is an integer number (4851144000).

Almost surely, 2^100000121211 is an apocalyptic number.

100000121211 is a deficient number, since it is larger than the sum of its proper divisors (55236486789).

100000121211 is a wasteful number, since it uses less digits than its factorization.

100000121211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674040 (or 674034 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 100000121211 its reverse (112121000001), we get a palindrome (212121121212).

The spelling of 100000121211 in words is "one hundred billion, one hundred twenty-one thousand, two hundred eleven".