100122451998 has 16 divisors (see below), whose sum is σ = 200279093520. Its totient is φ = 33368452416.

The previous prime is 100122451991. The next prime is 100122452011. The reversal of 100122451998 is 899154221001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100122451991) 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 7 ways as a sum of consecutive naturals, for example, 1386415 + ... + 1456842.

It is an arithmetic number, because the mean of its divisors is an integer number (12517443345).

Almost surely, 2^100122451998 is an apocalyptic number.

100122451998 is an abundant number, since it is smaller than the sum of its proper divisors (100156641522).

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

100122451998 is a wasteful number, since it uses less digits than its factorization.

100122451998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2849131.

The product of its (nonzero) digits is 51840, while the sum is 42.

Adding to 100122451998 its reverse (899154221001), we get a palindrome (999276672999).

The spelling of 100122451998 in words is "one hundred billion, one hundred twenty-two million, four hundred fifty-one thousand, nine hundred ninety-eight".