21121200002219 has 2 divisors, whose sum is σ = 21121200002220. Its totient is φ = 21121200002218.

The previous prime is 21121200002131. The next prime is 21121200002257. The reversal of 21121200002219 is 91220000212112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21121200002219 - 2²⁰ = 21121198953643 is a prime.

It is a super-2 number, since 2×21121200002219² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21121200002194 and 21121200002203.

It is not a weakly prime, because it can be changed into another prime (21121200002719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10560600001109 + 10560600001110.

It is an arithmetic number, because the mean of its divisors is an integer number (10560600001110).

Almost surely, 2^{21121200002219} is an apocalyptic number.

21121200002219 is a deficient number, since it is larger than the sum of its proper divisors (1).

21121200002219 is an equidigital number, since it uses as much as digits as its factorization.

21121200002219 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 21121200002219 in words is "twenty-one trillion, one hundred twenty-one billion, two hundred million, two thousand, two hundred nineteen".