21000202193 has 8 divisors (see below), whose sum is σ = 21100977888. Its totient is φ = 20899574784.

The previous prime is 21000202169. The next prime is 21000202213. The reversal of 21000202193 is 39120200012.

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

It is a cyclic number.

It is not a de Polignac number, because 21000202193 - 2¹² = 21000198097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21000202133) 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, 252230 + ... + 324992.

It is an arithmetic number, because the mean of its divisors is an integer number (2637622236).

Almost surely, 2^21000202193 is an apocalyptic number.

It is an amenable number.

21000202193 is a deficient number, since it is larger than the sum of its proper divisors (100775695).

21000202193 is a wasteful number, since it uses less digits than its factorization.

21000202193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74143.

The product of its (nonzero) digits is 216, while the sum is 20.

The spelling of 21000202193 in words is "twenty-one billion, two hundred two thousand, one hundred ninety-three".