21102122219 has 32 divisors (see below), whose sum is σ = 22999541760. Its totient is φ = 19288281600.

The previous prime is 21102122201. The next prime is 21102122227. The reversal of 21102122219 is 91222120112.

It is not a de Polignac number, because 21102122219 - 2²⁴ = 21085345003 is a prime.

It is a super-2 number, since 2×21102122219² (a number of 21 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 = 21102122194 and 21102122203.

It is not an unprimeable number, because it can be changed into a prime (21102127219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33442034 + ... + 33442664.

It is an arithmetic number, because the mean of its divisors is an integer number (718735680).

Almost surely, 2^21102122219 is an apocalyptic number.

21102122219 is a deficient number, since it is larger than the sum of its proper divisors (1897419541).

21102122219 is a wasteful number, since it uses less digits than its factorization.

21102122219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1091.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 21102122219 in words is "twenty-one billion, one hundred two million, one hundred twenty-two thousand, two hundred nineteen".