21021122210019 has 8 divisors (see below), whose sum is σ = 28028202985152. Its totient is φ = 14014061454120.

The previous prime is 21021122209993. The next prime is 21021122210041. The reversal of 21021122210019 is 91001222112012.

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

It is not a de Polignac number, because 21021122210019 - 2¹¹ = 21021122207971 is a prime.

It is a super-2 number, since 2×21021122210019² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21021122210419) 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, 2354149 + ... + 6898134.

It is an arithmetic number, because the mean of its divisors is an integer number (3503525373144).

Almost surely, 2^{21021122210019} is an apocalyptic number.

21021122210019 is a deficient number, since it is larger than the sum of its proper divisors (7007080775133).

21021122210019 is an equidigital number, since it uses as much as digits as its factorization.

21021122210019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10009617.

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

The spelling of 21021122210019 in words is "twenty-one trillion, twenty-one billion, one hundred twenty-two million, two hundred ten thousand, nineteen".