100122121099 has 64 divisors (see below), whose sum is σ = 141628354560. Its totient is φ = 68166126720.

The previous prime is 100122121097. The next prime is 100122121111. The reversal of 100122121099 is 990121221001.

It is not a de Polignac number, because 100122121099 - 2¹ = 100122121097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100122121091) 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 63 ways as a sum of consecutive naturals, for example, 42658444 + ... + 42660790.

It is an arithmetic number, because the mean of its divisors is an integer number (2212943040).

Almost surely, 2^100122121099 is an apocalyptic number.

100122121099 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

100122121099 is a deficient number, since it is larger than the sum of its proper divisors (41506233461).

100122121099 is a wasteful number, since it uses less digits than its factorization.

100122121099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4640.

The product of its (nonzero) digits is 648, while the sum is 28.

The spelling of 100122121099 in words is "one hundred billion, one hundred twenty-two million, one hundred twenty-one thousand, ninety-nine".