21001333200194 has 16 divisors (see below), whose sum is σ = 33161370190080. Its totient is φ = 9947588816880.

The previous prime is 21001333200193. The next prime is 21001333200217. The reversal of 21001333200194 is 49100233310012.

It is not an unprimeable number, because it can be changed into a prime (21001333200193) 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, 10487417 + ... + 12328364.

It is an arithmetic number, because the mean of its divisors is an integer number (2072585636880).

Almost surely, 2^{21001333200194} is an apocalyptic number.

21001333200194 is a deficient number, since it is larger than the sum of its proper divisors (12160036989886).

21001333200194 is a wasteful number, since it uses less digits than its factorization.

21001333200194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22840025.

The product of its (nonzero) digits is 3888, while the sum is 29.

The spelling of 21001333200194 in words is "twenty-one trillion, one billion, three hundred thirty-three million, two hundred thousand, one hundred ninety-four".