21202102211219 has 4 divisors (see below), whose sum is σ = 21457549225896. Its totient is φ = 20946655196544.

The previous prime is 21202102211209. The next prime is 21202102211231. The reversal of 21202102211219 is 91211220120212.

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 21202102211219 - 2¹² = 21202102207123 is a prime.

It is a super-2 number, since 2×21202102211219² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21202102211209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127723507214 + ... + 127723507379.

It is an arithmetic number, because the mean of its divisors is an integer number (5364387306474).

Almost surely, 2^{21202102211219} is an apocalyptic number.

21202102211219 is a deficient number, since it is larger than the sum of its proper divisors (255447014677).

21202102211219 is an equidigital number, since it uses as much as digits as its factorization.

21202102211219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255447014676.

The product of its (nonzero) digits is 576, while the sum is 26.

The spelling of 21202102211219 in words is "twenty-one trillion, two hundred two billion, one hundred two million, two hundred eleven thousand, two hundred nineteen".