100122019 has 4 divisors (see below), whose sum is σ = 100144080. Its totient is φ = 100099960.

The previous prime is 100121981. The next prime is 100122023. The reversal of 100122019 is 910221001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100122019 - 2¹⁹ = 99597731 is a prime.

It is a super-2 number, since 2×100122019² = 20048837377272722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100121993 and 100122011.

It is not an unprimeable number, because it can be changed into a prime (100122049) 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 3 ways as a sum of consecutive naturals, for example, 1447 + ... + 14224.

It is an arithmetic number, because the mean of its divisors is an integer number (25036020).

Almost surely, 2^100122019 is an apocalyptic number.

100122019 is a deficient number, since it is larger than the sum of its proper divisors (22061).

100122019 is an equidigital number, since it uses as much as digits as its factorization.

100122019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22060.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 100122019 is about 10006.0990900550. The cubic root of 100122019 is about 464.3475939704.

The spelling of 100122019 in words is "one hundred million, one hundred twenty-two thousand, nineteen".