21021020002219 has 4 divisors (see below), whose sum is σ = 22127389476040. Its totient is φ = 19914650528400.

The previous prime is 21021020002193. The next prime is 21021020002231. The reversal of 21021020002219 is 91220002012012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21021020002219 - 2³¹ = 21018872518571 is a prime.

It is a super-2 number, since 2×21021020002219² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21021020002219.

It is not an unprimeable number, because it can be changed into a prime (21021020002289) 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, 553184736882 + ... + 553184736919.

It is an arithmetic number, because the mean of its divisors is an integer number (5531847369010).

Almost surely, 2^{21021020002219} is an apocalyptic number.

21021020002219 is a deficient number, since it is larger than the sum of its proper divisors (1106369473821).

21021020002219 is a wasteful number, since it uses less digits than its factorization.

21021020002219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1106369473820.

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 21021020002219 in words is "twenty-one trillion, twenty-one billion, twenty million, two thousand, two hundred nineteen".