100121968 has 10 divisors (see below), whose sum is σ = 193986344. Its totient is φ = 50060976.

The previous prime is 100121953. The next prime is 100121969. The reversal of 100121968 is 869121001.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100121969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3128796 + ... + 3128827.

Almost surely, 2^100121968 is an apocalyptic number.

It is an amenable number.

100121968 is a deficient number, since it is larger than the sum of its proper divisors (93864376).

100121968 is an equidigital number, since it uses as much as digits as its factorization.

100121968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6257631 (or 6257625 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 100121968 is about 10006.0965416090. The cubic root of 100121968 is about 464.3475151275.

Adding to 100121968 its reverse (869121001), we get a palindrome (969242969).

The spelling of 100121968 in words is "one hundred million, one hundred twenty-one thousand, nine hundred sixty-eight".