990021443202213 has 16 divisors (see below), whose sum is σ = 1348147496156160. Its totient is φ = 645955534327536.

The previous prime is 990021443202131. The next prime is 990021443202241. The reversal of 990021443202213 is 312202344120099.

It is a happy number.

It is not a de Polignac number, because 990021443202213 - 2³⁶ = 989952723725477 is a prime.

It is a super-2 number, since 2×990021443202213² (a number of 31 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990021443252213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80684923 + ... + 92141736.

It is an arithmetic number, because the mean of its divisors is an integer number (84259218509760).

Almost surely, 2^{990021443202213} is an apocalyptic number.

It is an amenable number.

990021443202213 is a deficient number, since it is larger than the sum of its proper divisors (358126052953947).

990021443202213 is a wasteful number, since it uses less digits than its factorization.

990021443202213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172867336.

The product of its (nonzero) digits is 186624, while the sum is 42.

The spelling of 990021443202213 in words is "nine hundred ninety trillion, twenty-one billion, four hundred forty-three million, two hundred two thousand, two hundred thirteen".