100021212019 has 8 divisors (see below), whose sum is σ = 109556703360. Its totient is φ = 90891486336.

The previous prime is 100021212017. The next prime is 100021212089. The reversal of 100021212019 is 910212120001.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 100021212019 - 2¹ = 100021212017 is a prime.

It is a super-2 number, since 2×100021212019² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100021211987 and 100021212005.

It is not an unprimeable number, because it can be changed into a prime (100021212017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101440899 + ... + 101441884.

It is an arithmetic number, because the mean of its divisors is an integer number (13694587920).

Almost surely, 2^100021212019 is an apocalyptic number.

100021212019 is a deficient number, since it is larger than the sum of its proper divisors (9535491341).

100021212019 is a wasteful number, since it uses less digits than its factorization.

100021212019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202882829.

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 100021212019 in words is "one hundred billion, twenty-one million, two hundred twelve thousand, nineteen".