21201211102019 has 8 divisors (see below), whose sum is σ = 23568591994752. Its totient is φ = 18939047137920.

The previous prime is 21201211102007. The next prime is 21201211102067. The reversal of 21201211102019 is 91020111210212.

It is a happy number.

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

It is not a de Polignac number, because 21201211102019 - 2⁴ = 21201211102003 is a prime.

It is a super-2 number, since 2×21201211102019² (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 = 21201211101985 and 21201211102003.

It is not an unprimeable number, because it can be changed into a prime (21201211102069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26304231734 + ... + 26304232539.

It is an arithmetic number, because the mean of its divisors is an integer number (2946073999344).

Almost surely, 2^{21201211102019} is an apocalyptic number.

21201211102019 is a deficient number, since it is larger than the sum of its proper divisors (2367380892733).

21201211102019 is a wasteful number, since it uses less digits than its factorization.

21201211102019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52608464317.

The product of its (nonzero) digits is 144, while the sum is 23.

The spelling of 21201211102019 in words is "twenty-one trillion, two hundred one billion, two hundred eleven million, one hundred two thousand, nineteen".