990021200202006 has 16 divisors (see below), whose sum is σ = 2262905600461824. Its totient is φ = 282863200057704.

The previous prime is 990021200201977. The next prime is 990021200202007. The reversal of 990021200202006 is 600202002120099.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990021200202007) 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, 11785966669030 + ... + 11785966669113.

It is an arithmetic number, because the mean of its divisors is an integer number (141431600028864).

Almost surely, 2^{990021200202006} is an apocalyptic number.

990021200202006 is an abundant number, since it is smaller than the sum of its proper divisors (1272884400259818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

990021200202006 is a wasteful number, since it uses less digits than its factorization.

990021200202006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23571933338155.

The product of its (nonzero) digits is 7776, while the sum is 33.

The spelling of 990021200202006 in words is "nine hundred ninety trillion, twenty-one billion, two hundred million, two hundred two thousand, six".