21002012200194 has 8 divisors (see below), whose sum is σ = 42004024400400. Its totient is φ = 7000670733396.

The previous prime is 21002012200193. The next prime is 21002012200217. The reversal of 21002012200194 is 49100221020012.

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

21002012200194 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21002012200193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1750167683344 + ... + 1750167683355.

It is an arithmetic number, because the mean of its divisors is an integer number (5250503050050).

Almost surely, 2^{21002012200194} is an apocalyptic number.

21002012200194 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21002012200194 is a wasteful number, since it uses less digits than its factorization.

21002012200194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3500335366704.

The product of its (nonzero) digits is 576, while the sum is 24.

The spelling of 21002012200194 in words is "twenty-one trillion, two billion, twelve million, two hundred thousand, one hundred ninety-four".