21201120221019 has 8 divisors (see below), whose sum is σ = 28869610513920. Its totient is φ = 13833355037736.

The previous prime is 21201120220979. The next prime is 21201120221023. The reversal of 21201120221019 is 91012202110212.

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

It is not a de Polignac number, because 21201120221019 - 2¹⁶ = 21201120155483 is a prime.

It is a super-2 number, since 2×21201120221019² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21201120221019.

It is not an unprimeable number, because it can be changed into a prime (21201120221089) 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 7 ways as a sum of consecutive naturals, for example, 75181277239 + ... + 75181277520.

It is an arithmetic number, because the mean of its divisors is an integer number (3608701314240).

Almost surely, 2^{21201120221019} is an apocalyptic number.

21201120221019 is a deficient number, since it is larger than the sum of its proper divisors (7668490292901).

21201120221019 is a wasteful number, since it uses less digits than its factorization.

21201120221019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150362554809.

The product of its (nonzero) digits is 288, while the sum is 24.

The spelling of 21201120221019 in words is "twenty-one trillion, two hundred one billion, one hundred twenty million, two hundred twenty-one thousand, nineteen".