100670121 has 10 divisors (see below), whose sum is σ = 150383882. Its totient is φ = 67113360.

The previous prime is 100670117. The next prime is 100670123. The reversal of 100670121 is 121076001.

It can be written as a sum of positive squares in only one way, i.e., 98724096 + 1946025 = 9936^2 + 1395^2 .

It is not a de Polignac number, because 100670121 - 2² = 100670117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100670094 and 100670103.

It is not an unprimeable number, because it can be changed into a prime (100670123) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 621340 + ... + 621501.

Almost surely, 2^100670121 is an apocalyptic number.

It is an amenable number.

100670121 is a deficient number, since it is larger than the sum of its proper divisors (49713761).

100670121 is an equidigital number, since it uses as much as digits as its factorization.

100670121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1242853 (or 1242844 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 18.

The square root of 100670121 is about 10033.4501045254. The cubic root of 100670121 is about 465.1933847043.

The spelling of 100670121 in words is "one hundred million, six hundred seventy thousand, one hundred twenty-one".