21210121011119 has 2 divisors, whose sum is σ = 21210121011120. Its totient is φ = 21210121011118.

The previous prime is 21210121011097. The next prime is 21210121011151. The reversal of 21210121011119 is 91111012101212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21210121011119 - 2²⁰ = 21210119962543 is a prime.

It is a super-2 number, since 2×21210121011119² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21210121011094 and 21210121011103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21210121011319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10605060505559 + 10605060505560.

It is an arithmetic number, because the mean of its divisors is an integer number (10605060505560).

Almost surely, 2^{21210121011119} is an apocalyptic number.

21210121011119 is a deficient number, since it is larger than the sum of its proper divisors (1).

21210121011119 is an equidigital number, since it uses as much as digits as its factorization.

21210121011119 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 23.

The spelling of 21210121011119 in words is "twenty-one trillion, two hundred ten billion, one hundred twenty-one million, eleven thousand, one hundred nineteen".