21202002202019 has 8 divisors (see below), whose sum is σ = 21429894200832. Its totient is φ = 20974534190280.

The previous prime is 21202002202009. The next prime is 21202002202099. The reversal of 21202002202019 is 91020220020212.

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 21202002202019 - 2¹² = 21202002197923 is a prime.

It is a super-2 number, since 2×21202002202019² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21202002201985 and 21202002202003.

It is not an unprimeable number, because it can be changed into a prime (21202002202009) 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, 105896219 + ... + 106096244.

It is an arithmetic number, because the mean of its divisors is an integer number (2678736775104).

Almost surely, 2^{21202002202019} is an apocalyptic number.

21202002202019 is a deficient number, since it is larger than the sum of its proper divisors (227891998813).

21202002202019 is a wasteful number, since it uses less digits than its factorization.

21202002202019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211993537.

The product of its (nonzero) digits is 576, while the sum is 23.

The spelling of 21202002202019 in words is "twenty-one trillion, two hundred two billion, two million, two hundred two thousand, nineteen".